Akademisk avhandling--Stockholms högskola. / Extra t.p., with thesis statement, inserted. With the exception of p. [519]-623 reprinted from Vȧr egen tids historia, edited by Yngve Lorents, Stockholm, 1957, v. 7. Summary in English. Bibliography: p. [624]-630.

Proefschrift--Rijksuniversiteit te Utrecht. / "Stellingen" ([2] p.) inserted. Bibliography: p. 207-215.

Thesis (M.S.)--Texas State University-San Marcos, 2006. / Vita. Appendices: leaves 50-62. Includes bibliographical references (leaves 63-65).

Thesis (M.S.)--Texas State University-San Marcos, 2006. / Vita. Appendices: leaves 50-62. Includes bibliographical references (leaves 63-65).

General Nathan F. Twining distinguished himself in leading the American Fifteenth Air Force during the last full year of World War II in the European Theatre. Drawing on the leadership qualities he had already shown in combat in the Pacific Theatre, he was the only USAAF leader who commanded three separate air forces during World War II. His command of the Fifteenth Air Force gave him his biggest, longest lasting, and most challenging experience of the war, which would be the foundation for the reputation that eventually would win him appointment to the nation's highest military post as Chairman of the Joint Chiefs of Staff during the Cold War.