Hull, Dale O. (1912-2003)

Papers

1917-1999

19.9 linear feet (15 records center cartons and 1 document box)

RS 9/7/56

University Archives, Special Collections Department, Iowa State University.

Open for research.

This collection is stored offsite. Please contact the Special Collections Department at least two working days in advance.

Consult Head, Special Collections Department

Dale O. Hull Papers, RS 9/7/56, Special Collections Department, Iowa State University Library.

Biographical Information and Publications

1930-1999

1.3 linear ft.

This series contains biographical information and publications. Also included are notebooks compiled by Hull highlighting his professional career and personal life.

Box

Folder

Title

Dates

1

1

Biographical Information

1955-1978

5

22

Biographical Information

1953-1988

5

23

News clippings and Resume

1988-1989

5

24

Correspondence regardng Zur M. Craine Award National Silo Association

1969-1970

5

25

140 Flying Club, Inc.

1959-1972

5

26

Lundell Company - Vernon Lundell

1966-1990

5

27

Color Print of Vernon Lundell's Flail Type Harvester at First Public Demonstration - June 10, 1952

1952

5

28

Report - Cooperative Shop Work at Material Division, Air Corps, Wright Field, Dayton, Ohio, for Period Ending 11-22-1930

1930

6

9

Lists of Publications

1966 circa

6

20

Publications - "Costs of Alternatives for Harvesting, Storing, Processing and Feeding Corn"

1970

6

20

Publications - "Rotary Hoes… for Fast, Low-Cost Cultivation"

1956

6

20

Publications - "Proper Hitching"

1956

6

20

Publications - "Tips on Purchasing Crankcase Oils"

1957

6

20

Publications - "Plastic Pipe on the Farm"

1957

6

20

Publications - "A Simple Way to Test Your Grain and Hay Moisture"

1960

6

20

Publications - "Field Production of Hay Wafers"

1961

6

20

Publications - "Feedlot Site Planning"

1963

6

20

Publications - "Systems in Handling Forage Crops"

1962

6

20

Publications - "Hay Wafers: A New Hay-Making System"

1962

6

20

Publications - "Report of 4,058 Iowa Corn Harvest Accidents, 1947-1962"

1963

6

20

Publications - "Planning On-the-farm Feed Processing Systems"

1964

6

20

Publications - "Farm Feed Processing: with Portable Grinder-Mixers"

1967

6

20

Publications - "Planning Agricultural Engineering Technology Schools"

1966

6

20

Publications - "Development of a New Self-Propelled Tractor and Matching Implements"

undated

6

20

Publications - "Batch and Continuous Dryers for Shelled Corn"

1967

6

20

Publications - "1968 Costs for Field Work"

1968

6

20

Publications - "1969 Farm Machinery Operating Costs"

1969

6

20

Publications - "1965 Costs for Field Work"

1965

6

21

Publications - "4-H Tractor Program, Fourth and Advanced Years, Farm Machinery Care and Safety"

1976 circa

6

21

Publications - "The Occupational Safety and Health Act"

1961

6

21

Publications - "Estimating Farm Fuel Requirements for Crop Production and Livestock Operations"

1974

6

21

Publications - "4-H Tractor Program, Third Year, Tractor Care and Safety"

1963

6

21

Publications - "4-H Tractor Project, Second Year, Tractor Care and Safety"

1976 circa

6

21

Publications - "4-H Tractor Project, Third Year, Tractor Care and Safety"

undated

6

21

Publications - "Fatal Accidents of Iowa Farm People, 1947-1971"

1975

6

21

Publications - "Safe Operation of Agricultural Equipment"

1975

6

21

Publications - "Iowa Agricultural Accident and Illness Study, 1975"

1975

6

21

Publications - "Farm Accidents in Iowa"

1975

6

21

Publications - "Horse Pulling Contests In Iowa"

1992

7

24-25

Notebook #1 - "Articles Prepared for Farm Publications"

1947-1954

7

26-27

Notebook #2 - "Articles Prepared for Farm Publications"

1955-1958

13

36-38

Notebook - "Professional and Personnel Information"

1929-1957

14

27

Memorial Brochure for Helen Hull, Wife of Dale Hull

1999

Reference Files: Structures and Processing

1917-1978

5 boxes

This series contains information on structures and processing. Subjects include documents regarding farm buildings, such as barns, feedlots, silos, and farm houses. Other topics contained in this series include building materials, electrical wiring, heating, and plumbing.

Box

Folder

Title

Dates

1

2

Barn Equipment

1943-1977

1

5

Barns, General

1933-1972

1

6

Basements and Cellars

1933-1965

1

3

Bathroom Fixture/Design

1948-1964

1

4

Beams

1941-1961

1

9

Beef Cattle Publications

1958-1968

1

10

Beef Cattle Publications

1968-1973

1

7

Beef Confinement - Flush Gutters

1970-1974

1

8

Beef Confinement - Flush Gutters

1970-1974

1

12

Brick

1949-1959

1

22

Cement and Glues

1943-1951

1

13

Cisterns

1949-1957

1

14

Concrete

1946-1951

1

15

Concrete

1952-1969

1

21

Concrete Floor Bars

1971

1

17

Concrete Masonry Construction

1951-1970

1

16

Concrete Structures

1933-1963

1

20

Concrete, Construction Details

1951-1965

1

23a

Corn Cribs

1945-1960

1

23

Corn Storage Programs

1970

1

11

Dairy Barns

1949-1970

1

27

Dryers and Dehydrators

1943-1969

1

28

Dryers and Dehydrators

1969-1970

1

29

Dryers, Aeration Systems

1950-1962

1

30

Dryers, Aeration Systems

1962-1975

2

3

Dryers, Heated Air, Batch and Conventional

1958-1975

2

2

Dryers, Heated Air, Batch and Conventional

undated

1

25

Dryers, Unheated Air

1946-1978

1

24

Drying Corn and Small Grains

1917-1976

2

4

Earth Construction

1939-1965

2

10

Electric Heating Tape

1951-1963

3

20

Electric Lighting

1939-1950

2

11

Electric Motors

1964, 1971

2

9

Electric Power, Cost, Rates, Etc.

1946-1970

2

12

Electric Wiring

1952, 1962

2

5

Elevators, Farm and Terminal

1936-1964

2

6

Elevators, Farm and Terminal

1964-1975

2

7

Environmental Control

1960-1965

2

8

Epoxy Plastics

1960

2

13

Fans, Attic, Cooling

1969

2

19

Farm Shop

1936-1976

2

15

Farmers Home Administration

1954-1957

2

17

Farmhouse Planning, Housing Series University of Illinois

1944-1969

3

1

Farmhouse Plans

1933-1949

3

2

Farmhouse Plans

1951-1954

3

3

Farmhouse Plans

1967-1970

3

4

Farmhouse Remodeling

1936-1966

2

14

Farmstead Engineering

1960-1963

2

16

Farmstead Mechanization Economics

1960-1970

3

5

Farmstead Planning

1947-1969

3

11

Feed and Grain Processing

1964-1975

3

9

Feed Flaking, Roller Cookers

1962-1970, undated

3

10

Feed Flaking, Roller Cookers

1970-1973

3

8

Feeders, Self and Floor

1942-1943

2

20

Feedlots - Leave Trip

1968

2

18

Feedlots Dust, Odor, Space

1964-1973

2

21

Feedlots, Large-Commercial

1962-1966

2

22

Feedlots, Large-Commercial

1966-1973

2

27

Fencing

1940-1974

2

24

Fencing, Contoured

1948-1956

2

25

Fencing, Electric-Commercial Literature

1944-1978

2

26

Fencing, Posts

1942-1969

3

6

Fireplaces

1941-1963

3

7

Fireproof Construction

1930-1954

2

23

Floors, All Types

1937-1965

2

1

Hay Dryers

1945-1970

3

16

Heaters, Radiant

1971-1973, undated

3

13

Heaters, Stock Tank

1940-1953

3

17

Heating

1943-1973

3

12

Hog Equipment

1957-1971

3

15

Hog Houses

1951-1971

3

14

Household Equipment

1939-1956

1

26

In Storage Drying

1960-1973

3

19

Insulation

1940-1976

3

21

Kitchens, Designs

1945-1963

3

22

Lumber

1947-1968

3

23

Machine Sheds

1919-1957

3

30

Manure Disposal

1945-1962, undated

3

31

Manure Disposal

1962-1971

3

32

Manure Disposal

1971-1973

3

28

Manure Disposal - Beef Feedlots

1968-1974

3

29

Manure Disposal - Methane Generators

1973-1974

3

27

Manure Disposal - Swine

1973-1974

3

26

Manure Disposal, Lagoon Design

1973-1974

1

19

Masonry Concrete

1928-1970

4

1

Materials Handling - Bins

1961-1964

3

24

Materials Handling, Bunks

1956-1958

3

33

Metal Structures

1949-1956

3

25

Milk House

1932-1956

3

18

Mobile Homes

1972

4

2

Nails

1956-1959

4

3

Nitrate Problem

1963-1967

4

4

Packing Houses and Processing Plants

1964-1971

4

5

Packing Houses and Processing Plants

1971-1975

4

6

Painting

1925-1971

4

7

Paints - Sprayer Equipment

1946-1960

4

8

Paints - Van Vlack Materials

1925-1969

4

9

Plaster

1952

4

10

Plumbing

1936-1965

4

11

Plywood

1955, 1971

4

12

Pole Buildings - Doane

1956-1970

4

13

Poultry Housing

1950-1970

4

18

Redwood File

1970 circa

4

17

Refridgeration

1936-1967

1

18

Reinforced Concrete

1949-1951

4

15

Roads, Asphalt and Concrete

1970

4

14

Rodent Control

1941

4

16

Roofs

1949-1967

5

4

Sewage Disposal

1950-1970

4

25

Silo Unloaders

1959

4

26

Silo Unloaders

1959-1978

4

21

Silo - Pit Leaflet

1949-1950, undated

4

20

Silos - Cover Materials

1954-1958

4

23

Silos, Horizontal

1944-1973

4

22

Silos, Portable, Bunker, and Temporary Type

1932-1959

4

24

Silos, Vertical - Metal

1946-1973

5

1

Small Buildings

1951

4

19

Sound Proofing

1953-1971

5

5

Stabilization, Road and Farm Lots

1946-1960

5

2

Storage of Grain

1942-1970

5

3

Storage of Vegetables

1942-1971

5

6

Swimming Pools

1958-1962

5

10

Telephones

undated

5

8

Temporary Buildings

1941

5

9

Termite Damage in Buildings

1949-1951

5

7

Trusses, All Types

1949-1966

5

11

Ventilation

1924-1952, undated

5

12

Ventilation

1952-1971

5

13

Ventilation - Electric Fans

1947-1964

5

19

Water Filters, Iron

1930-1971

5

20

Water Purification

1940-1944, undated

5

21

Water Purification

1948-1971

5

15

Water Supply, Farm

1948-1955

5

16

Water Supply, Farm

1955-1972

5

14

Wiring

1940-1959

5

17

Wood

1932-1953

5

18

Wood

1953-1967

Reference Files: Safety

1917-1977

2 boxes

Information about various safety subjects, including safety presentations in which Hull was involved. Topics include gun safety, farm machinery safety, and fire prevention.

Box

Folder

Title

Dates

7

23

Accidents - Falls

1973-1974

7

19

Bibliography - Safety Subjects

1975-1976

7

15

Bicycle Safety

1973-1976

6

13

Big Bale Accidents

1975-1977

7

13

Boating Safety

1972

7

9

Chemical Storage

1975

6

5

Consumer Product Safety Commission

1976

7

7

Fire Prevention

1930-1976

6

10

Fire Prevention - 1974 Fire Prevention Week

1971-1977

7

8

Fire Prevention - America Burning

1972 circa

6

2

Fire Prevention - Equipment, Extinguishers

1950-1976

6

6

Fire Prevention - Liquefied Petroleum Gas

1947-1969

6

1

Fire Prevention - Operation EDITH

1962-1973, undated

6

14

Fire Prevention - Smoke Detectors

1974-1977

7

16

Gun Safety

undated

6

7

Hay Fires

1917-1976, undated

7

10

Highway Safety - Flashing Lights

1971-1972

7

11

Highway Safety - Slow Moving Vehicle Emblems

1967-1977

7

17

Hunters Education

1973

7

12

Lightning Protection

1968-1975

7

6

Machinery - Lawn Mowers

1957-1970

7

14

Motorcycle Safety

1974-1976 undated

7

20

Mowers - Lawn

1970-1975

7

5

NH3 Additive N-Serve

1976

6

3

Personal Protective Equipment

1969-1973

6

4

Personal Protective Equipment

1973-1974

7

21

Poison

1966-1975

7

22

Poison

1975-1977

7

18

Power Tool Safety

1974-1976, undated

6

16

Safety - Accident Statistics

1947-1973

6

17

Safety - Accident Statistics

1973-1974

6

18

Safety - Accident Statistics

1974-1977

6

11

Safety Grain Bins

1975-1976

7

4

Safety Nitrogen Fertilizers

1971-1977

7

3

Safety on the Farm

1936-1973

6

12

Tractor Safety Movie

1953-1954

6

15

Tractor, ROPS, Etc.

1968-1975

7

1

Tractors - Safety

1965-1972

7

2

Tractors - Safety

1972-1974

6

8

Tractors, Cabs, and Sound Control

1970-1972

6

9

Tractors, Cabs, and Sound Control

1972-1977

Reference Files: Power and Machinery

1917-1980

8 boxes

The series contains documents regarding Hull's work with power and machinery. It includes information on bailers, cultivators, tractors, harvesting machinery, and tillers.

Box

Folder

Title

Dates

13

30

4-H Snowmobile Project Leader Training

1973

15

24

4-H Welding Project, Leader Training

1965-1973

8

4

Agricultural Machinery Research Association

1955-1957

13

7

Amoco Oil Co

1963-1973

8

5

ASAE and SAE

1944 circa

8

3

Atomic Energy

1960, undated

8

6

Automotive Antifreeze and Cooling Systems

1943-1957

8

2

Automotive Appliances

1929-1971

8

7

Bailers, All Types

1934-1963, undated

8

8

Bailers, All Types

1963-1975

8

9

Bale Gun, Pneumatic

1950

8

11

Bale Ties, Twine and Wire

1954-1975

8

12

Bearings

1950-1972, undated

8

10

Binders, Corn and Grain

1937-1947

8

13

Brakes, Trailer

1972-1977

12

6

Bulletins Ideas, Leaflets, Plans

undated

9

14

Calcium Chloride Institute Bulletins

undated

11

1

Carburetors for LP Gas

1950-1971

8

17

Census Data

1955-1975

8

15

Chemurgic - Corn Cobs, Straw, Etc.

1933-1962

9

5

Combine Adjustment

1967-1973, undated

9

6

Combine Design

1958-1971

9

7

Combine Kernel Damage

1938-1975

9

9

Combines

1918-1951, undated

9

10

Combines

1951-1966

9

11

Combines

1966-1975

9

4

Combines, Bean Pickup

1970-1975

8

16

Computers

undated

8

29

Contest - Fuel Economy Plowing

1938 circa

8

22

Contest - National and State Plowing Rules

1956-1976

8

19

Contest - Terracing Plows and Commercial Machinery

1946

8

28

Contest - Tractor Pulling

1954-1976

9

19

Corn - Southern Leaf Blight

1970-1971

9

20

Corn - Southern Leaf Blight

1971-1974

8

23

Corn 20 and 30 Inch Rows

1941-1965

8

24

Corn 20 and 30 Inch Rows

1965-1969

8

34

Corn Borer Control

1945-1949

9

22

Corn Harvest Safety

1972-1974, undated

8

31

Corn Harvesting

1935-1976

8

33

Corn Harvesting - Toppers

1958-1960

9

8

Corn High Moisture

1953-1973

8

26

Corn Pickers - Adjustment, Repair, Attachments

1951-1956

8

32

Corn Picking Contest Results

1950-1966

9

17

Corn Planter, Twin Row

1968-1971

9

16

Corn Planters

1940-1975

9

15

Corn Planters

undated

9

18

Corn Planters, Plateless

1971-1975

9

13

Corn Production Studies

1933-1966

8

25

Corn Shellers

undated

8

21

Corn Stalk Shredders

1934-1965

9

21

Corn Storing, Low Quality

1970-1975

8

30

Corn - Picker Shellers

1953-1960

16

1

Cost of Farm Production and Labor

1937-1966

9

12

Cost of Production - Hay and Silage

1934-1959

9

23

Cost of Production - Small Grains

1970

9

24

Cost of Production - Soybeans

1942

8

18

Cost of Production - Corn

1940-1968

10

2

Cost of Tractor Power

1938-1967

10

1

Cost, Life and Service of Machines

1933-1969

8

35

Cotton

1954

8

20

Cultivation and Weeders

1942-1957, undated

8

14

Cultivators - Flame

1956-1967

9

1

Custom Leasing Machinery

1958-1960

9

2

Custom Leasing Machinery

1960-1970

9

3

Custom Rates - Magazines

1948-1977

10

3

Diesel Engines

1945-1958

10

4

Directories - SAE, ASAE, Extension, College

1947-1967

10

6

Disks, Disk Sharpeners, etc.

1949-1972

10

5

Drills and Seeding Machines

1943-1975

10

7

Dynometers, Tests, Devices

1939-1973

10

11

Elevators, Augers and Flight

1969

10

9

Elevators, Grain Storage

1943-1945, undated

10

8

Engines, Small, 4-H, etc.

1972-1974, undated

10

18

Ensilage, Processing Grain Corn

1958-1974

10

15

Ensilage, Processors, Etc.

1947-1952, undated

10

16

Ensilage, Processors, Etc.

1952-1972

10

17

Ensilage, Processors, Etc.

1973

10

14

Ensilage, Soft Corn

1923-1965

10

10

Ensilages, Moisture Testing Devices

1946-1949

10

13

Ensilages, Preservatives

1949-1975

10

12

Exhibits

1948

13

10

Faber and Phoenix Labs

1951-1966

10

20

Farm Equipment Institute

1954

10

25

Farm Feed Processing; Portable Grinder/Mixer

1964-1967

1

31

Farm Service Rate

1970-1976

10

19

Farmers, Small and Low Income

1973-1975

10

21

Feed Mixer Unloader Wagons

1966

10

24

Feed Wagon-Mix-Unload

1965

10

32

Fertilizer Application - Liquid

1954-1963

10

31

Fertilizer Application - Solid and Pellet Type

1955-1970

10

30

Fertilizer Distributor and Attachments

1944-1975, undated

10

29

Fertilizer NH3

1951-1976, undated

10

33

Fertilizer, Liquid, Solid, #32, etc.

1954-1977, undated

10

28

Fertilizers

1948-1974

8

1

File References

undated

10

27

Flax Production

1943

10

26

Forage Harvesters

1951-1973, undated

10

22

Forage Harvesters, Rotary Types

1951-1962, undated

10

23

Forage Wagon, Self-Unloading Power Unit

1941-1961

16

2

Fuel Economy

1954-1964

11

5

Fuels, Diesel

1949-1970

11

2

Fuels, Furnace and Space Heaters

1948-1963

11

3

Fuels, LP Gas - Torque Topper Data

1952-1954, undated

11

4

Fuels, LP Gas - Torque Topper Data

1952-1967

11

9

Fuels, NH3 to LP Gas Handling

1973

14

28

Fuels, Solid Type

1946-1971

11

6

Fuels, Spark Ignition Engines

1939-1972

11

7

Fuels, Storage and Handling

1938-1973

11

8

Fuels, Storage and Handling

1974

11

12

Garbage Cooking Equipment

1953-1954

11

11

Grain and Hay Preservatives

1945-1975

11

16

Grain Cleaning Machines for Local Elevators

1940-1971

11

20

Grain Conditioning Conference

1966-1967

11

17

Grain Conveyors, Pneumatic

1955, 1966

11

19

Grain Elevator Sanitation 52"-53" Program

1952-1975

11

18

Grain Grinders, Crushers and Mills

1954-1976

11

10

Grain Sorghum

1947-1971

11

14

Granular Insecticides

1955-1962

11

13

Grease, All Types

1948-1971

11

15

Greases, National Lubrication and Grease Institute

1955-1969

11

21

Handbook, Midwest Farm

1931-1963, undated

11

22

Harrows, All Types

undated

11

24

Harvesting - Grass and Legume Seed

1942-1961

11

26

Hay Crusher, Advantages, Etc.

1951-1965

11

27

Hay Fires

1946-1974

11

23

Hay Handling Equipment

1944-1972

11

31

Hay Harvesting - Methods and Costs

1936-1964

16

3

Hay Harvesting - Methods and Costs

1964-1974

11

30

Hay Pelletizing

1954-1960

11

25

Hay Storage and Curing

1939-1970

12

5

Hay Wafer Ventilation

1963-1966

12

1

Hay Wafering Machine

1960-1962, undated

12

2

Hay Wafering Machine

1962-1971

12

4

Hay Wafering Studies

1961-1971

11

28

Hitches - Horse

1932-1934, undated

11

29

Hitches - Tractor

1944-1972

12

3

Horse Drawn Machinery

1971

12

7

I & T Magazine

1960 circa

12

11

Labor Saving Devices

1943-1946, undated

12

12

Labor Saving Devices

1946-1958

12

9

Labor Saving Devices - Blowers - Elevating

1954-1963

12

8

Labor Saving Devices - Blowers - Elevating

1951-1954, undated

12

10

Labor Saving Devices, Cost Cutting Publications

1954-1963

12

14

Machinery - Value Analyses

1971

12

19

Machinery Maintenance

1942-1971

12

18

Machinery Maintenance

undated

12

16

Machinery Minimum Farm Requirements

1956

12

20

Machinery Reliability

1970-1971

12

15

Machinery Trend and Development

1953-1980

12

17

Machinery, Farm Retailing

1952-1970

12

13

Machinery-Cost-Crop-opt-System

1973

12

28

Manure Loaders

1945-1967

12

23

Manure Spreaders

1946-1971

12

21

Mechanic Training, Tractors and Implements

1967

12

22

Metric System

1973

15

6

Minimum Tillage Seminar

1954-1976

12

30

Mobilization Directives

1951-1952

12

29

Moisture Testers

1941-1972

12

25

Motors, Electric

1939-1965

12

24

Motors, Hydraulic

1960-1965

12

31

Movies

1951-1972

12

26

Mowers

1939-1960

12

27

Mowers - Power Lawn

1965-1971

8

27

National Corn Picking Contest Rules

1949-1966

12

32

Nursery Machinery

1959-1974

13

11

Oil Filters

1941-1969

16

4

Oil Tests - Laboratories

1957-1974

13

8

Oils - Gasoline and Motor Oil Additives

1950-1977

12

33

Oils Manufacturers Approved Lists

1954-1956

13

3

Oils, Hydraulic and Industrial

1952-1962, undated

13

4

Oils, Hydraulic and Industrial

1962-1973

13

1

Oils, Motor

1940-1954, undated

13

2

Oils, Motor

1954-1974

13

5

Oils, Motor - API Grade Classifications, SAE

1946-1956, undated

13

6

Oils, Motor - API Grade Classifications, SAE

1956-1966

12

22

Oils, Rust Prevention

1946-1970

13

12

Operator Instruction Manual Correspondence

1954-1955

13

16

Peanuts

1974

13

17

Plow - Chisel Type

1968-1970

13

19

Plows All Types Operation, Etc.

1924-1959

13

20

Plows All Types Operation, Etc.

1959-1974

13

18

Plows All Types Operation, Etc.

undated

13

15

Plows, Snow

undated

13

22

Post Hole Diggers

1945-1954

13

13

Power Requirements, Tillage

1958

13

14

Power, Wind and Wind Electric

1974

13

21

Preventative Maintenance, Tractor, Truck and Car

1943-1956

13

28

Publication, Requests for and Lists Available

1954-1974

13

26

Research Power and Machinery

1947-1960

13

27

Research Power and Machinery

1960-1970

13

29

Rodent Control

1964

13

25

Rope

1937-1943

13

23

Rope Specifications, Uses, Etc.

1954

13

24

Rotary Hoes

1942-1967

13

34

Saws, Chain

1968-1970

14

11

Scales, Livestock and Farm Produce

1962-1972

14

3

Seed and Cleaning Equipment

1937-1973

13

9

Seeder Studies, Central Engineering Company Trials

1953, undated

14

10

Sewing Machines

1943-1966

14

9

Slide File References and Notes

1948-1955, undated

14

14

Small Tractors

1970-1971

13

32

Snowmobile

1970-1973

13

31

Snowmobile Safety

1971-1976

13

33

Soybean Production

1971-1977

14

5

Sprayer Bulletins

1948-1959

14

6

Sprayer Bulletins

1959-1977

14

7

Sprayers, Farm and Aircraft

1944-1955

14

8

Sprayers, Farm and Aircraft

1955-1976

14

4

Sprayers, Nozzles, and Strainers

1959-1976, undated

14

1

Steam Cleaners

1948-1971

14

2

Sugar Beets

1962-1971

13

35

Sunflowers

1957-1973

15

3

Tachometers

1968-1972

15

8

Tillage Minimum

1955-1959

15

9

Tillage Minimum

1959-1973

15

10

Tillage Studies

1944-1955

15

11

Tillage Studies

1955-1965

15

12

Tillage Studies

1965-1976

15

7

Tillage Studies Lincoln Meeting

1970-1972

15

13

Tillage, Mulch

1957-1972

15

14

Tillage, Soil Compaction

1951-1976, undated

15

15

Tillage, Soil Compaction

1976

15

5

Tillers

1917-1971

15

19

Tires and Wheels

1938-1975

15

18

Tires, Dry Mineral Ballast

1960-1961

14

12

Tools, Hand

1938

14

17

Tractor as Emergency Power

1946-1955, undated

15

1

Tractor Hour Meters

1953-1964

14

22

Tractor Noise

1967-1970

14

23

Tractor Noise

1970-1973

14

25

Tractor Operation (Timely Tips on Power Farming)

1941-1952, undated

14

26

Tractor Operation (Timely Tips on Power Farming)

1952-1976

15

2

Tractor Schools

1961-1970

14

21

Tractor Tests

1950-1973

14

18

Tractor Transmissions

1966-1971

14

19

Tractors, Gasoline, Two Fuel

1919-1964

14

20

Tractors, Gasoline, Two Fuel

1964-1970

14

24

Tractors, Hydraulic Systems

1956-1977

14

13

Tractors, Tandem Type

1957-1963

14

15

Tractors, Turbocharging and Torque Toppers

1966-1972

15

4

Tramp Iron Control and Removal

1960

14

16

Tree and Shrub Diggers

1953-1955

15

17

Valves, Valve Rotators

1952-1960

15

16

Vocational Agriculture Work

1944

15

20

Weather Probability

1963-1969

16

5

Welding, Electric and Gas

1945-1959

15

25

Welding, Electric and Gas

undated

15

21

Windrowers

1964-1971

15

22

Woodchipping

1952-1954

15

23

Work Simplification

1944-1948