Zelda was raised in New York City, and did a BA at New Jersey College for Women (now part of Rutgers University).
She was a keen nudist. With her then husband, Reed Suplee (1916-86), she owned and managed three nudist camps in the period 1930s – 1950s, and was in Doris Wishman’s Diary of a Nudist, 1961, and also in The Moving Finger, 1963 and The Parisienne and the Prudes, 1964 – all nudist films. She was the first full-frontal nude in Playboy magazine (in black-and white).
For 17 years she was editor and researcher of True Story, True Detective and Master Detective Magazine. She was a consulting sexologist, an hypnotist and one of the first to do past-life regressing, and was interested in all kinds of health and psychic phenomena.
In 1969 EEF and the Albany Trust co-sponsored a symposium, “The First International Congress on Gender Identity" in London. Zelda was the co-ordinator. In 1971 she was part of the First National Conference on Religion and the Homosexual, which took part in New York, and several time attended police conventions where EEF pamphlets were distributed. She compiled the EEF newsletter 1969-76 which reported the ongoing dialogue between EEF, trans people and associated professionals. In 1971 EEF sponsored production of a 28-minute docuentary, I am Not This Body, which featured a discussion in the EEF office between Zelda, Leo Wollman, two trans women and actress Pamela Lincoln (who was purportedly seeking information about transsexuals).
Also around that time Zelda introduced Doris Wishman, whom she had known since Diary of a Nudist, to Leo Wollman, which resulted in the film Adam or Eve, 1971, which was later recut with additional footage and finally released as Let Me Die a Woman, 1978.
Zelda was the public face of EEF until it closed in 1977.
In 1981, at the 7th International Gender Dysphoria Symposium, HBIGDA presented lifetime achievement awards to Reed Erickson, Zelda and Harry Benjamin.
In 1983 she moved to Los Angeles to handle Erickson's dealings with ONE Instititute.
After EEF, she moved to Galveston to start the Janus Information Facility (JIF) with Paul Walker who was a co-founder of HBIGDA.
She died aged 81 in Los Angeles.
- Doris Wishman (dir). Diary of a Nudist, with Zelda R Suplee as the camp director. US 72 mins 1961.
- Nicholas Ghosh. "Tribute to Zelda R. Suplee". Gender Review, December 1978.
- Walter J. Meyer, Paul A. Walker & Zelda R. Suplee. 1981. "A Survey of Transsexual Hormonal Treatment in Twenty Gender‐treatment Centers". Journal of Sex Research, 17, 4: 344-349. Abstract
- Suzanne J. Kessler &Wendy MacKenna. Gender: A Ethnomethodological Approach. Univ. of Chicago Press, 1987: xiii.
- Ingo Swann. Remote Viewing: The Real Story: An Autobiographical Memoir. 1996: Chp 5. www.biomindsuperpowers.com/Pages/RealStoryCh5.html.
- Joanne Meyerowitz. How Sex Changed: A History of Transsexuality in the United States. Cambridge, Ma, London: Harvard University Press. 363 pp 2002: 211-2 ,216, 227, 231, 236, 239-240, 257, 280.
- Andy Humm & Joan Nixon. “Phyllis Saperstein Recalled”. Gay City. 12/29/2005. gaycitynews.com/site/index.cfm?newsid=17007725.
- Michael J. Bowen. " 'StrangerHer': The Peculiar Saga of Let Me Die a Woman". Booklet included in Synapse DVD release of Let Me Die a Woman, 2005.
- Aaron Devor. "Building a Better World for Transpeople: Reed Erickson and the Erickson Educational Foundation". International Journal of Transgenderism, 10, 1, 2006: 47-68.
- "'What's My Line?' segment from the 50s (60s)?". Clothes Free Forum, April 2008. www.clothesfreeforum.com/archive/index.php/t-12092.html.
- C. Todd White. Pre-Gay L.A.: A Social History of the Movement for Homosexual Rights. Urbana: University of Illinois Press, 2009: 204.
This clip is of Zelda, using the pseudonym Yolande Reed, when she appeared on What's My Line in 1953.