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10,828
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2,610
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1,426
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Results:
1 - 24 of
20,257
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Keep 'em rolling! [PT boats]
Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a group of men wearing welding helmets and carrying lanterns on long cords over their shoulders. In the striped area of the flag are photographs of PT boats.
Date:
1941
Creator:
Lionni, Leo, 1910-1999.
Object Type:
Poster
System:
The UNT Digital Library
Keep 'em rolling! [tanks]
Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a welder at work. In the striped area of the flag are photographs of a military tank with a soldier aiming a gun from the top of the tank.
Date:
1941
Creator:
Lionni, Leo, 1910-1999.
Object Type:
Poster
System:
The UNT Digital Library
Keep 'em rolling! [planes]
Black & white photographs superimposed on a U.S. flag design. In the blue area of the flag is a photograph of a mechanic working on an airplane propeller. In the striped area of the flag are photographs of U.S. Army airplanes flying.
Date:
1941
Creator:
Lionni, Leo, 1910-1999.
Object Type:
Poster
System:
The UNT Digital Library
Comparison of Vee-Type and Conventional Tail Surfaces in Combination with Fuselage and Wing in the Variable-Density Tunnel
"The pitching and the yawing moments of a vee-type and a conventional type of tail surface were measured. The tests were made in the presence of a fuselage and a wing-fuselage combination in such a way as to determine the moments contributed by the tail surfaces" (p. 1).
Date:
July 1941
Creator:
Greenberg, Harry
Object Type:
Report
System:
The UNT Digital Library
The Calculation of Span Load Distributions of Swept-Back Wings
"Span load distributions of swept-back wings have been calculated. The method used was to replace the wing with a bound vortex at the quarter-chord line and to calculate the downwash due to the system of bound and trailing vortices to conform at the three-quarter-chord line to the slope of the flat-plate wing surface. Results are given for constant-chord and 5:1 tapered plan forms, for sweep-back angles of 0 degrees, 30 degrees, and 45 degrees, and for aspect ratios of 3, 6, and 9" (p. 1).
Date:
December 1941
Creator:
Mutterperl, William
Object Type:
Report
System:
The UNT Digital Library
Methods of Analyzing Wind-Tunnel Data for Dynamic Flight Conditions
"The effects of power on the stability and the control characteristics of an airplane are discussed and methods of analysis are given for evaluating certain dynamic characteristics of the airplane that are not directly discernible from wind-tunnel tests alone. Data are presented to show how the characteristics of a model tested in a wind tunnel are affected by power. The response of an airplane to a rolling and a yawing disturbance is discussed, particularly in regard to changes in wing dihedral and fin area" (p. 1).
Date:
October 1941
Creator:
Donlan, C. J. & Recant, I. G.
Object Type:
Report
System:
The UNT Digital Library
Soldiers' life : make the regular Army your career.
Color image of a soldier in an early World War II U.S. Army uniform and helmet, carrying a rifle. The soldier smiles as he walks. The background of the poster is blue.
Date:
1941
Creator:
Woodburn, Tom B.
Object Type:
Poster
System:
The UNT Digital Library
China fights on.
A Chinese man in military uniform and cap looks toward the sky. Several tiny planes circle him. The planes and his cap bear the 12-pointed sun symbol of the Chinese forces. Near the right edge of the poster are four Chinese characters in red. The characters roughly translate as "Unite Against the Enemy and Rebuild Our Nation."
Date:
[1941..1946]
Creator:
Gaydos.
Object Type:
Poster
System:
The UNT Digital Library
United we stand.
Banner with U.S. Seal at each end, within red squares. The central portion of the banner is white with the text "United We Stand" in red.
Date:
1941
Creator:
United States. Office for Emergency Management. Division of Information.
Object Type:
Poster
System:
The UNT Digital Library
Bonds or bondage : everybody--every pay day 10%.
Image of a man in cap and overalls, with outstretched arms and legs. In one hand he holds a U.S. flag; his other hand and leg are chained to a swastika-inscribed ball. One side of his face smiles; the other side is weary. The poster background is also split in two halves: On the left is a landscape of farm lands, industrial smoke stacks, and skyscrapers; on the right is a dark barren landscape.
Date:
1941/1942?
Creator:
unknown
Object Type:
Poster
System:
The UNT Digital Library
Soil conservation is vital to you.
On the right is an aerial photo of farmland. Below the photo are three pamphlets about soil conservation, with a box reading "Many government pamphlets are available on request." On the left is the title and above the title a blank box with small letters reading, "Use this space to list your available reading material."
Date:
1941
Creator:
United States. Soil Conservation Service.
Object Type:
Poster
System:
The UNT Digital Library
The what and how of hybrid corn.
Describes the process of creating hybrid corn on the farm; provides reasons for the hybridization of corn.
Date:
1941
Creator:
Richey, Frederick D. (Frederick David), b. 1884
Object Type:
Book
System:
The UNT Digital Library
"We did it then, we will do it again" : beat the promise.
This poster depicts an army of workers marching from "1919" to "1941" alluding to America's military intervention in the First World War and tracing that heritage to the Second World War. In the center is an image of a 1919 letter from Franklin D. Roosevelt, then Acting Secretary of the Navy, to Eldridge R. Johnson, President of Victor Talking Machine Company.
Date:
1941/1942?
Creator:
unknown
Object Type:
Poster
System:
The UNT Digital Library
[Commencement Calendar for North Texas State Teachers College, Spring 1941]
Commencement calendar for the Spring 1941 graduating class of North Texas State Teachers College.
Date:
Spring 1941
Creator:
North Texas State Teachers College
Object Type:
Pamphlet
System:
The UNT Digital Library
[Revised Commencement Program for North Texas State Teachers College, August 23, 1941]
Commencement program for the 1941 graduating class for the North Texas State Teachers College. Printed on the cover are the words, "The Twenty-Ninth Annual Summer Commencement of North Texas State Teachers College Denton, Texas Revised Copy Saturday, August the Twenty-Third Nineteen Hundred and Forty-One At Eight O'clock in the Evening The Auditorium." The program includes the order of service and a list of graduates for both the baccalaureate and master degrees.
Date:
Summer 1941
Creator:
North Texas State Teachers College
Object Type:
Pamphlet
System:
The UNT Digital Library
[Commencement Program for North Texas State Teachers College, June 1, 1941]
Commencement program for the 1941 Baccalaureate Service for the North Texas State Teachers College. Printed on the cover are the words, "North Texas State Teachers College Denton, Texas The Baccalaureate Service Sunday Morning June the First Nineteen Hundred and Forty-One Main Auditorium." The program contains the order of service for the Baccalaureate ceremony.
Date:
1941
Creator:
North Texas State Teachers College
Object Type:
Pamphlet
System:
The UNT Digital Library
[Commencement Program for North Texas State Teachers College, June 2, 1941]
The 1941 Commencement Program for North Texas State Teachers College. Printed on the cover are the words, "The Fifty-First Annual Commencement of North Texas State Teachers College Denton, Texas (Revised Copy) Monday, June Second Nineteen Hundred and Forty-One At Ten o'clock in the Morning The Main Auditorium." The program contains the order of service and a list of graduates for both the baccalaureate and master's degrees.
Date:
1941
Creator:
North Texas State Teachers College
Object Type:
Pamphlet
System:
The UNT Digital Library
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
Keep 'em rolling! [guns]
Black & white photographs superimposed on a large U.S. flag design. In the blue area of the flag is a photograph of a man in a shirt and tie, who appears to be working on or using a gun sight. In the red striped areas of the flag are photographs of a group of soldiers operating a large artillery gun.
Date:
1941
Creator:
Lionni, Leo, 1910-1999.
Object Type:
Poster
System:
The UNT Digital Library
Supplement to Comparison of Automatic Control Systems
"This analysis deals with the indirect regulator, wherefrom the behavior of the direct regulator is deduced as a limiting case. The prime mover is looked upon as "independent of the load": a change in the adjusting power (to be applied) for the control link (as, for example, in relation to the adjusting path (eta) with pressure valves or the rudder of vessels) does not modify the actions of the prime mover. Mass forces and friction are discounted; "clearance" also is discounted in the transmission links of the regulator" (p. 1).
Date:
August 1941
Creator:
Oppelt, W.
Object Type:
Report
System:
The UNT Digital Library
Effects of Some Present-Day Airplane Design Trends on Requirements for Lateral Stability
Note presenting computations made to determine the effects of some airplane design trends on the fin area and the dihedral angle required for lateral stability. The specific factors studied were wing loading, moments of inertia in roll and yaw, wing chord, and tail length. The results of the computations are presented in the form of diagrams of variations of fin area with dihedral angle for neutral stability.
Date:
June 1941
Creator:
Bamber, Millard J.
Object Type:
Report
System:
The UNT Digital Library
Ordnance maintenance : prismatic compass, M1918.
Describes the Prismatic Compass, M1918 and provides instructions for its operation, maintenance, and its functions in relation to various types of field artillery.
Date:
July 17, 1941
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Orientation
Provides a text and reference book covering the principles of orientation. Orientation is defined as "the accurate location of datum points and the establishment of lines of known length and direction".
Date:
July 15, 1941
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
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