He holds a master's degree in journalism.
Several of his books deal with pop culture and/or entertainment history and how the media and status quo shape and manipulate audiences' perceptions and opinions. Some of his books are exclusively about the LGBT presence in and contributions to entertainment.
Some of Hadleigh's books are quotes collections, some are histories and overviews, and some are interview books with movie personalities. Several of these interviews, as with Rock Hudson, were published in periodicals before the subjects died.
Hadleigh is gay.
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In Hadleigh's book Broadway Babylon, Madeline Kahn is quoted as saying: "Nathan Lane has a wonderful sensibility for comedy...It does rather surprise me that as a gay man he participates in that degree of homophobic humor in The Producers." Madeline Kahn died in 1999. Nathan Lane only was signed to appear in The Producers in October 2000.
In the book Leading Ladies, referring to the film Brief Encounter, Hadleigh writes: "Sir Nöel did not believe any of the remakes worked nearly as well, including the highly publicised 1975 British telefilm starring Sophia Loren and Richard Burton." However, Noël Coward died in March 1973.
Among other claims Hadleigh has made is that Rock Hudson had an affair with Liberace. In a filmed interview, journalist Woody McBreairty confronted Hadleigh with the information that Tom Clark, publicist and former lover of Hudson, had said of the claim: "Nonsense. It never happened. I knew Rock for thirty years...Rock did not know this writer and never spoke to him. The way Rock is quoted is just not the way he talked". In response, Hadleigh stated that he had interviewed Hudson twice, in 1977 and 1982.
- Hadleigh, Boze (1981). The Films of Jane Fonda. ISBN 080-650-7543.
- Hadleigh, Boze (1986). Conversations with My Elders. ISBN 031-200-1150. (also published as Celluloid Gaze)
- Conversations with My Elders (republished as Celluloid Gaze) includes interviews with actors Sal Mineo and Rock Hudson; directors George Cukor, Luchino Visconti, and Fassbinder; and designer, photographer, and author Cecil Beaton. Their conversations with the author reveal much about the lives and careers of these celebrities and how their homosexuality affected both.
- Hadleigh, Boze (1990). Hispanic Hollywood. ISBN 080-651-1850.
- Hadleigh, Boze (1991). The Vinyl Closet:Gays and Lesbians in the Music World. ISBN 096-234-9798. (also published as Sing Out!)
- Hadleigh, Boze (1992). Leading Ladies. ISBN 086-051-8086. (UK only)
- Hadleigh, Boze (1993). The Lavender Screen. ISBN 080-651-3411.
- Hadleigh, Boze (1994). Hollywood Babble On. ISBN 155-972-2193.
- Hadleigh, Boze (1994). Hollywood Lesbians. ISBN 156-980-0146.
- Hollywood Lesbians is a collection of interviews with 10 lesbians in the entertainment industry. Publishers Weekly wrote: "Fans of Hollywood's golden age will find this collection of interviews conducted over many years revealing, though hampered. The subjects - director Dorothy Arzner, designer Edith Head, actresses Judith Anderson, Marjorie Main, Barbara Stanwyck, Nancy Kulp, Capucine, Patsy Kelly, Agnes Moorehead and Sandy Dennis — were raised in a generation terrified of voicing support for fellow homosexuals, let alone daring to come out of the closet to acknowledge their own sexuality... Still, with carefully couched questions from Hadleigh (Conversations with My Elders), though some of the respondents dance around the subjects of sex and sexuality. Still, an enlightening picture emerges of Tinseltown, different from that presented in the fanzines."
- Hollywood Gays is a collection of interviews with prominent film personalities, such as Liberace, Anthony Perkins, Randolph Scott, and several others, most of them widely known as homosexual. Publishers Weekly said about the book: "Hadleigh (is) evidently taking up where the great gossip columnists of yesteryear left off." The book includes an interview with producer David Lewis, who talks freely about his longtime companion James Whale, as well as a conversation with William Haines, whose career was destroyed by Louis B. Mayer after Haines refused to marry a woman, and was later caught with another man in his cot at a YMCA.
- Hadleigh, Boze (1996). Bette Davis Speaks. ISBN 156-980-0669.
- Hadleigh, Boze (1998). Hollywood and Whine. ISBN 155-972-4730. (published in the UK as Hollywood Bitch)
- Hadleigh, Boze (1999). Celebrity Feuds!. ISBN 087-833-2448.
- Hadleigh, Boze (2000). In or Out. ISBN 978-1569801567.
- Hadleigh, Boze (2003). Celebrity Lies!. ISBN 156-980-2459.
- Hadleigh, Boze (2003). Holy Matrimony!. ISBN 074-073-3257.
- Hadleigh, Boze (2005). Celebrity Diss and Tell. ISBN 978-074-075-4739.
- Hadleigh, Boze (2007). Mexico’s Most Wanted. ISBN 978-159-797-1492.
- Hadleigh, Boze (2007). Broadway Babylon. ISBN 978-082-308-8300.
- Hadleigh, Boze (2014). An Actor Succeeds. ISBN 978-087-910-8885.
- Hadleigh, Boze (2015). Holy Cow!. Skyhorse Publishing. ISBN 978-163-220-5575.
- Hadleigh, Boze (2015). 492 Great Things About Being Italian. Skyhorse Publishing. ISBN 978-1634505345.
- In or Out: Gay & Straight Celebs Talk About Themselves & Each Other is a compilation of celebrity quotes from stars who comment on themselves, their sexuality, on others, on the closet, and on society's homophobia, as well as that of show business.
- The Lavender Screen: The Gay and Lesbian Films — Their Stars, Makers, Characters, and Critics is an illustrated overview of LGBT-themed films, most of them starring heterosexual actors in the lead gay, lesbian or bisexual roles, such as Robin Williams in The Birdcage. It was updated and re-released in 2001.
- The Vinyl Closet: Gays and Lesbians in the Music World focuses on present and past gay, lesbian and bisexual singers, composers, musicians and dancers in North America and Britain, with a foreword by Leonard Bernstein, and is one of the first books that document their artistic contributions. According to Madonna, it "cuts through the role-playing crap and shows the music world as it really ... is! It's camp with a High-C!"
- Robinson, Charlotte (2017-04-25). "Boze Hadleigh Talks Hollywood Lesbians From Garbo To Foster & More (AUDIO)". Huffington Post. Retrieved 2018-01-31.
- Hadleigh, Boze (2001), The lavender screen : the gay and lesbian films : their stars, makers, characters, and critics, Citadel Press, p. 11, ISBN 0-8065-2199-6
- Broadway Babylon, Back Stage Books, 2007 ISBN 0823088308, p289
- "Obituary: Madeline Khan", Independent, 6 December 1999; 
- Brooks, Mel; Meehan, Tom "The Producers: The Book, Lyrics, and Story Behind the Biggest Hit in Broadway History!",Miramax Books, 2001, p37, p50.
- "Leading Ladies", Backstage Books, p70
- Morley, Sheridan "Nöel Coward", Haus Publishing, 2013, p4
- "Sing Out! Gays and Lesbians in the Music World.", Barricade Books,1997.
- [Maupin, Armistead, A friend rang me and said how could I do that to such a beautiful, beautiful man?, The Guardian, 24 June 1999 
- Woody McBreairty: Interview with Boze Hadleigh, 1987; 
- Salvadori, T.R. (Winter 1991). "The Vinyl Closet". GLBT Reviews. 3 (4).
- Nonfiction Book Review - Hollywood Lesbians
- Nonfiction Book Review - Hollywood Gays