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[Letter from William J. McKinley to Claude D. White and Family, November 2, 1915]

Description: Letter to Claude D. White and family from William J. McKinley discussing his recent trips to Alabama, Georgia, and Mississippi where he evaluated various farms for future purchase. He then goes on to discuss his family and friends in the area and his plans to visit Claude when he is able.
Date: November 7, 1915
Creator: McKinley, William J.
Partner: UNT Libraries Special Collections

Report on Behavior of Aeroplanes in Gusts

Description: Part 1 presents the results of a wind tunnel test of a biplane model with an 18 inch span. The lift, drift, and pitching moment were measured for a series of angles of incidence corresponding to the maximum possible changes of flight attitude. Only the discussion of symmetrical or longitudinal changes is given. From the observed rate of variation of the forces and pitching moment, it was possible to calculate the derivatives needed in the complete theory of longitudinal stability in still air.
Date: October 7, 1915
Creator: Hunsaker, Jerome C. & Wilson, Edward Bidwell
Partner: UNT Libraries Government Documents Department

Revision of the American Marmots

Description: Discusses history, nomenclature, common names, habits, external characters, and specimens of American marmots. Describes, lists locations, and provides a key to species and subspecies.
Date: April 7, 1915
Creator: Howell, Arthur H.
Partner: UNT Libraries Government Documents Department