found: Mozart, W. A. Early works, c1982 (a.e.)t.p. (compiled and edited by Ada Richter)
found: SSDI, Aug. 16, 2004(Ada Richter; b. 1900; d. 1990; of Merchantville, N.J.)
found: ASCAP biographical dictionary, 4th ed.(Richter, Ada A.; [pseudonyms] Hugh Arnold; Wilma Moore; b. Philadelphia Pa.; composer, author, arranger)
found: University of Maryland IPAM site, 19 September 2018(Ada Richter was born August 10, 1900. She began studying piano at age five. In addition to Ada Richter she became "Hugh Arnold," "Wilma Moore," and "Eileen Gail." Ada Richter died in 1988)