Armstrong, FM Inventor, Dies In Leap From East Side Suite. The New York Times. February 2, 1954: 1. ISSN 0362-4331. Maj. Edwin H. Armstrong, whose inventions provided much of the basis for modern broadcasting, was found dead yesterday morning on a third-floor balcony of River House, 435 East Fifty-second Street. The 63-year-old electrical engineer had plunged from a window of his luxurious thirteenth-floor apartment, apparently late Sunday evening or during the night.
Lengermann, Patricia M.; Niebrugge-Brantley, Jill. Marianne Weber (1870- 1954): A Woman-Centered Sociology. The Women Founders: Sociology and Social Theory, 1830-1930 : a Text/reader. Boston: McGraw-Hill. 1998: 194. ISBN 978-1-57766-509-0.
Portuges, Catherine; Jouve, Nicole Ward. Colette. Sartori, Eva Martin; Zimmerman, Dorothy Wynne (编). French Women Writers. University of Nebraska Press. 1994: 80–81. ISBN 0803292244(英语).