7 questions to ask when you buy or sell shelled corn by grade. (open access)

7 questions to ask when you buy or sell shelled corn by grade.

An explanation of corn grade requirements. Factors include insects, odors, moisture, weight-per-bushel, cleanliness, damaged kernels, and color.
Date: February 1952
Creator: United States. Extension Service.
Object Type: Book
System: The UNT Digital Library
8 steps in grading soybeans : under revised standards, effective September 1, 1949. (open access)

8 steps in grading soybeans : under revised standards, effective September 1, 1949.

An explanation of the process used by U.S. federal grain inspectors to grade soybeans. Factors include odor, weevil or garlic infestation, moisture, weight per bushel, foreign material, mixed colors, splits, and damage.
Date: June 1949
Creator: United States. Extension Service.
Object Type: Book
System: The UNT Digital Library
20-MM aircraft gun matériel M1 and M2. (open access)

20-MM aircraft gun matériel M1 and M2.

"In addition to a description of the 20-mm aircraft gun matériel M1 and M2, this manual contains technical information required for the identification, use, and care of the matériel."
Date: April 2, 1942
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
38 ways to cut costs in the manufacture and sale of consumers' durable goods. (open access)

38 ways to cut costs in the manufacture and sale of consumers' durable goods.

Suggests cost savings strategies for manufacturers operating under war-time price regulations, with the goal of reducing their need for relief from the Office of Price Administration.
Date: 1942
Creator: United States. Office of Price Administration.
Object Type: Book
System: The UNT Digital Library
75-mm howitzer materiel. (open access)

75-mm howitzer materiel.

This is a World War II-era technical manual for the 75mm Howitzer. It contains information on use, maintenance, assembly, and other aspects of this weapon.
Date: June 21, 1941
Creator: United States. Army. Ordnance Department.
Object Type: Book
System: The UNT Digital Library
The 1952 cotton goal: 16 million bales from 28 million acres. (open access)

The 1952 cotton goal: 16 million bales from 28 million acres.

Discusses the need for large cotton crops in 1952 and requirements for achieving the highest possible yields. Includes an outlook for resources such as fertilizer, pesticides, defoliants, machinery, and manpower.
Date: February 1952
Creator: United States. Department of Agriculture.
Object Type: Book
System: The UNT Digital Library
Adobe or sun-dried brick for farm buildings. (open access)

Adobe or sun-dried brick for farm buildings.

Describes an efficient method of making and using adobe in the form of sun-dried bricks; describes how adobe bricks can be used in different parts of a building, such as: the roof, the boundary walls, the foundation, etc.
Date: August 1949
Creator: Miller, T. A. H. (Thomas Arrington Huntington), 1885- & Molander, Edward G.
Object Type: Book
System: The UNT Digital Library
Advanced map and aerial photograph reading. (open access)

Advanced map and aerial photograph reading.

"The purpose of this manual is to provide a text on advanced map and aerial photograph reading for military personnel who throughly understand the basic material in FM 21-25." (Page 1.)
Date: December 1944
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aerial photography. (open access)

Aerial photography.

A training manual designed to teach aerial photography for military purposes.
Date: July 8, 1941
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft engines. (open access)

Aircraft engines.

Discusses the principles, classification, description, and construction of internal combustion engines used in military aircraft. Includes instructions for storage of engines.
Date: January 1945
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft hardware and materials. (open access)

Aircraft hardware and materials.

Describes the types of "materials and hardware used in aircraft construction and repair."
Date: June 11, 1942
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft induction, fuel and oil systems. (open access)

Aircraft induction, fuel and oil systems.

Describes aircraft engine systems, fuels, and lubricants.
Date: February 22, 1944
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft mechanics tools. (open access)

Aircraft mechanics tools.

A manual for the beginning airplane mechanic. Discusses the proper use and care of tools.
Date: February 26, 1945
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft radio shop practice. (open access)

Aircraft radio shop practice.

Discusses maintenance and repair of the component parts of aircraft radio equipment, and the correct use of tools.
Date: May 1, 1942
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Aircraft woodwork. (open access)

Aircraft woodwork.

Discusses woodworking in aircraft manufacturing in general, and in detail the characteristics of wood, the glue and hardware necessary, hand tools and machines, as well as repair of the aircraft.
Date: December 22, 1942
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Airplane inspection guide. (open access)

Airplane inspection guide.

"The purpose of this manual is to furnish to mechanics, inspectors, and other personnel, ..., the necessary information relative to the inspection of airplanes, airplane engines, and auxiliary equipment."
Date: August 17, 1943
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Airplane structures. (open access)

Airplane structures.

Describes structural details of service airplanes used by the Army Air Corps, sufficient for personnel to perform inspection and maintenance of their equipment.
Date: October 29, 1941
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Airship aerodynamics. (open access)

Airship aerodynamics.

"This manual is designed as a text for the instruction of airship student pilots .... to give the knowledge of aerodynamics essential to the operation of [lighter than air aircraft]."(Page 2.)
Date: February 11, 1941
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
Alfalfa. (open access)

Alfalfa.

A guide to growing and using alfalfa on the farm. Includes recommendations for different regions of the United States.
Date: 1921
Creator: United States. Department of Agriculture.
Object Type: Book
System: The UNT Digital Library
Alfalfa Seed. (open access)

Alfalfa Seed.

A guide to judging and testing the quality of alfalfa seed.
Date: 1904
Creator: Brown, Edgar, 1871-
Object Type: Book
System: The UNT Digital Library
Alfalfa varieties in the United States. (open access)

Alfalfa varieties in the United States.

Describes the different types of alfalfa grown in the United States.
Date: 1940
Creator: Westover, H. L. (Harvey Leroy)
Object Type: Book
System: The UNT Digital Library
Algae in Water Supplies: An Illustrated Manual on the Identification, Significance, and Control of Algae in Water Supplies. (open access)

Algae in Water Supplies: An Illustrated Manual on the Identification, Significance, and Control of Algae in Water Supplies.

A manual designed to help "water analysts and others who deal with the many problems and effects associated with the presence of algae in water supplies."
Date: 1959
Creator: Palmer, Charles Mervin, 1900-
Object Type: Book
System: The UNT Digital Library
Alkali Lands. (open access)

Alkali Lands.

Summarizes an 1898 study of the problem of alkaline soil conditions as the result of irrigation in Montana.
Date: 1909
Creator: United States. Department of Agriculture.
Object Type: Book
System: The UNT Digital Library
American foulbrood of honey bees : how to control it. (open access)

American foulbrood of honey bees : how to control it.

Discusses American foul brood, a disease caused by a spore that infects bee larvae. Describes how to diagnose and control the disease. Lists the types of bees resistant to the disease.
Date: September 1954
Creator: Michael, A. S. (Albert Sylvester), 1910-
Object Type: Book
System: The UNT Digital Library