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Metal-Mine Accidents in the United States During the Calendar Year 1936

Description: Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1939
Creator: Adams, W. W. & Kolhos, M. E.
Partner: UNT Libraries Government Documents Department
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Coal-Mine Accidents in the United States, 1936

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1939
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Partner: UNT Libraries Government Documents Department

Print dress

Description: Summer suit of textured silk crepe in pink and black Holstein cow print with black flies. A) Jacket has two front ties; one at neck and one at natural waist. Two hook-and-eye closures along center front behind waist tie; flip peplum and 3/4 sleeves. Unlined. Built-in shoulder pads. Label: "Adrian / Original" B) Skirt is below knee-length; gored and flared. Waistband of black grosgrain ribbon with hook & eye closure. Unlined.
Date: 1939
Creator: Adrian, 1903-1959
Partner: UNT College of Visual Arts + Design

Girl's pinafore

Description: Girl's pinafore dress of white cotton. Sleeveless with ruffles around armholes, white work embroidered flowers around neck and middle of skirt. Ties at back. Closure of four buttons down the back at top of bodice.
Date: 1939/1940
Creator: Alesta, Bertie
Partner: UNT College of Visual Arts + Design
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A simplified method for the calculation of airfoil pressure distribution

Description: From Summary: "A method is presented for the rapid calculation of the pressure distribution over an airfoil section when the normal-force distribution and the pressure distribution over the "base profile" (i.e., the profile of the same airfoil were the camber line straight and the resulting airfoil at zero angle of attack) are known. This note is intended as a supplement to N.A.C.A. Report Nos. 631 and 634 wherein methods are presented for the calculation of the normal-force distribution over plain and flapped airfoils, respectively, but not of the pressures on the individual surfaces. Base-profile pressure-coefficient distributions for the usual N.A.C.A. family of airfoils, which are also suitable for several other commonly employed airfoils, are included in tabular form. With these tabulated base-profile pressures and the computed normal-force distributions, pressure distributions adequate for most engineering purposes can be obtained."
Date: May 1939
Creator: Allen, H. Julian
Partner: UNT Libraries Government Documents Department

Vest

Description: Formal vest of black silk grosgrain. Shawl lapel and two welt pockets at front. Single breasted with closure of four black pearlescent plastic buttons; buttons probably not original. Half belt in back with buckle. Black cotton lining and black synthetic back. Label in left outer pocket reads: Union Made Clothing Special Order/ Issued by Amalgamated Clothing Workers of America / Copyright 1913 by ACW of A / 803487 / Series A / No. 22892 / Mr. C.B. Munck / Date 8-11-39
Date: 1939
Creator: Amalgamated Clothing Workers of America
Partner: UNT College of Visual Arts + Design
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Reservoir Characteristics of the Eunice Oil Field, Lea County, New Mexico

Description: Report issued by the U.S. Bureau of Mines on the oil and gas production of the Eunice oil field in southeastern New Mexico. Properties of the oil field, and analysis of the oil and gas produced are presented. This report includes tables, maps, illustrations, and photographs.
Date: July 1939
Creator: Anderson, C. C.; Hinson, H. H. & Schroeder, H. J.
Partner: UNT Libraries Government Documents Department
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A comparison of several tapered wings designed to avoid tip stalling

Description: From Summary: "Optimum proportions of tapered wings were investigated by a method that involved a comparison of wings designed to be aerodynamically equal. The conditions of aerodynamic equality were equality in stalling speed, in induced drag at a low speed, and in the total drag at cruising speed. After the wings were adjusted to aerodynamic equivalence, the weights of the wings were calculated as a convenient method of indicating the optimum wing. The aerodynamic characteristics were calculated from wing theory and test data for the airfoil sections. Various combinations of washout, camber increase in the airfoil sections from the center to the tips, and sharp leading edges at the center were used to bring about the desired equivalence of maximum lift and center-stalling characteristics. In the calculation of the weights of the wings, a simple type of spar structure was assumed that permitted an integration across the span to determine the web and the flange weights. The covering and the remaining weight were taken in proportion to the wing area. The total weights showed the wings with camber and washout to have the lowest weights and indicated the minimum for wings with a taper ratio between 1/2 and 1/3."
Date: June 1939
Creator: Anderson, Raymond F.
Partner: UNT Libraries Government Documents Department
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The Growth and Development of the Recreation Program of the North Texas State Teachers College from 1911 to 1939

Description: The purpose of this study was to show the growth and development of the recreation program for men and women in the North Texas State Teachers College from 1911 to 1939. This thesis has attempted to show in chronological order that the growth and development of the year-round recreation program at North Texas State Teachers College was a result of two underlying factors; leisure time, and the innate tendency of man to express his emotions through the avenue of play.
Date: August 1939
Creator: Atkins, Noble James
Partner: UNT Libraries
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Resistance of transparent plastics to impact

Description: From Summary: "The problem of developing a windshield for aircraft which will withstand the effect of bird impacts during flight is a difficult one, as an estimate of the striking energy will indicate. If the average speed of the airplane is considered to be about 200 miles per hour and that of the bird about 70 miles per hour, the speed of the bird relative to the airplane may be as great as 400 feet per second. If a 4-pound bird is involved, a maximum impact energy of approximately 10,000 foot-pounds must be dissipated. To obtain this energy in a drop test in the Washington Monument, it would be necessary to drop a 20-pound weight down the 500-foot shaft. For both theoretical and practical reasons, it is necessary to keep the mass and speed more nearly like those to be encountered. However, to get an impact of about 10,000 foot-pounds with a 4-pound falling body, it would be necessary to drop it from a height of approximately one-half mile, neglecting air resistance. These facts will indicate some of the experimental obstacles in the way of simulating bird impacts against aircraft windshields."
Date: July 1939
Creator: Axilrod, Benjamin M. & Kline, Gordon M.
Partner: UNT Libraries Government Documents Department
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Psocids, Annoying House Pests.

Description: Describes the characteristics of psocids, their habits, and steps that can be taken to control psocids in the home.
Date: November 1939
Creator: Back, E. A. (Ernest Adna), 1886-
Partner: UNT Libraries Government Documents Department
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Measurements on a Low-Wing Model in the Rotating Jet and Comparison With Flight Measurements

Description: The present report deals with six-component measurements in the small tunnel of the DVL on a model of the BFW-M 27b(sub 1), which were made to determine the effect of rolling and yawing on the air forces and moments. The wind was given a spiral motion by means of a rotating screen, the model being suspended in the conventional manner. The lack of accuracy in the measurement of the rolling-yawing moments was very noticeable.
Date: September 1939
Creator: Bader, W.
Partner: UNT Libraries Government Documents Department
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Observations in Flight of the Region of Stalled Flow Over the Blades of an Autogiro Rotor

Description: "The flow over the inner halves of the rotor blades on a Kellet YG-1B autogiro was investigated in flight by making camera records of the motion of silk streamers attached to the upper surfaces of the blades. These records were analyzed to determine the boundaries of the region within which the flow over the blade sections was stalled for various tip-speed ratios. For the sake of comparison, corresponding theoretical boundaries were obtained. Both the size of the stalled area and its rate of growth with increasing tip-speed ratio were found to be larger than the theory predicted, although experiment agreed with theory with regard to shape and general location of the stalled area" (p. 1).
Date: December 1939
Creator: Bailey, F. J., Jr. & Gustafson, F. B.
Partner: UNT Libraries Government Documents Department
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Colonization of the East Texas Timber Region Before 1848

Description: For many years adventurers from Spain and France had explored Texas. For about fifty years Spain had tried to civilize and Christianize the Indians in East Texas. Finally the Spanish government had abolished the missions and presidios. During the following fifty years, very little had been done toward colonization in Texas. In 1821, Texas was an almost uninhabited country, with the exception of savage Indians. The Anglo-Americans came and changed it into a great state. The East Texas Timber Region has been the gateway through which most of the settlers came to Texas. The settlers who stopped there did their part in establishing the present state of Texas. The East Texans did their part in helping to win freedom from Mexico so they could lay a foundation for American civilization there.
Date: August 1939
Creator: Baker, Willie Gene
Partner: UNT Libraries
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Wind-Tunnel Tests of Several Forms of Fixed Wing Slot in Combination With a Slotted Flap on an N.A.C.A. 23012 Airfoil

Description: Note presenting tests of several forms of fixed wing slot in a large-chord NACA 23012 airfoil in the closed-throat 7- by 10-foot wind tunnel. The airfoil extended completely across the test section so that two-dimensional flow was approximated. The data are presented in the form of tables of important aerodynamic characteristics for each slot tested and as curves of section lift, profile-drag, and pitching-moment coefficients.
Date: April 1939
Creator: Bamber, M. J.
Partner: UNT Libraries Government Documents Department
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Wind-tunnel investigation of effect of yaw on lateral-stability characteristics 1: four N.A.C.A. 23012 wings of various plan forms with and without dihedral

Description: Four N.A.C.A. 23012 wings were tested at several angles of yaw in the N.A.C.A. 7- by 10-foot wind tunnel. All the wings have rounded tips and, in plan form, one is rectangular and the others are tapered 3:1 with various amounts of sweep. Each wing was tested with two amounts of dihedral and with partial-span split flaps. The coefficients of lift, drag, and pitching moment are given for all the models at zero yaw. The coefficients of rolling moment, yawing moment, and side force are given for the rectangular wing at all values of yaw tested. The rate of change in the coefficients with angle of yaw is given in convenient form for stability calculations.
Date: April 1939
Creator: Bamber, M. J. & House, R. O.
Partner: UNT Libraries Government Documents Department
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Wind-Tunnel Investigation of Effect of Yawing on Lateral-Stability Characteristics 2: Rectangular N.A.C.A. 23012 Wing with a Circular Fuselage and a Fin

Description: Note presenting testing of an N.A.C.A. 23012 rectangular wing with rounded tips in combination with a fuselage of circular cross section at several angles of yaw in the NACA 7- by 10-foot wind tunnel. The model was tested as a high-wing, a midwing, and a low-wing monoplane; for each wing location, tests were made with two amounts of dihedral and with partial-span split flaps. Results regarding the wing and fuselage, fin and fuselage, and wing, fuselage, and fin are provided.
Date: September 1939
Creator: Bamber, M. J. & House, R. O.
Partner: UNT Libraries Government Documents Department
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Stability of Rectangular Plates With Longitudinal or Transverse Stiffeners Under Uniform Compression

Description: In the present paper, the complete buckling conditions of stiffened plates are being developed for uniform compression. We shall treat plates with one or two longitudinal or transverse stiffeners at any point, discuss the buckling conditions, and evaluate them for different cases.
Date: August 1939
Creator: Barbré, R.
Partner: UNT Libraries Government Documents Department
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[Jane Arden Paper Doll]

Description: Clipping from a newspaper with a strip for "Jane Arden's Wardrobe" with illustrations of a woman and several dresses that could be cut out as a paper doll. The reverse includes a portion of the comic strip "Little Mary Mixup."
Date: August 20, 1939
Creator: Barrett, Monte & Ross, Russell E.
Partner: UNT Libraries Special Collections
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