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References
- ↑ Obituary of Elmer Greensfelder, Baltimore Sun, December 20, 1966
- ↑ Donald Kirkley, "Little Theaters Here Cheer By Award Of Drama League", Baltimore Sun, January 31, 1932.
- ↑ Donald Kirkley, "Half Past Heaven Is Presented At Play-Arts Guild", Baltimore Sun, October 29, 1931.
- ↑ Holly, David. "Elmer Greensfelder", in Baltimore in American Literature. Johns Hopkins University, 1933.
- ↑ United States Patent Office, Method and Apparatus For Synchronously Producing Sounds To Accompany Motion Pictures, Elmer Greensfelder, 1254684, 1918. (accessed October 25, 2009)
- ↑ United States Patent Office, Changeable Profile Toys, Elmer Greensfelder, 2755577, 1956. (accessed October 17, 2009)
- ↑ United States Patent Office, Loose Leaf Binder, Elmer Greensfelder, 1525777, 1925. (accessed October 25, 2009)
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