The Joy of Gay Sex is a sex manual for men who have sex with men by Charles Silverstein and Edmund White.
 The book was first published in 1977.
Simon Sheppard is a writer of gay erotica and a sex-advice columnist from San Francisco.
 He is the author of many books of gay sex writing, including "Man on Man: The Best of Simon Sheppard", "Sodomy!"
, "Jockboys," "Kinkorama: Dispatches From the Front Lines of Perversion," "In Deep", and "Sex Parties 101".
 He is also the editor of "Homosex: 60 Years of Gay Erotica," winner of the 2007 Lambda Literary Award for LGBT erotica; the anthology "Leathermen"; and is the coeditor of the anthologies "Rough Stuff" and "Roughed Up."
 Sheppard's work is wide-ranging, often combining history, philosophy, and culture — high and low — with hardcore sex.
 His first book, "Hotter Than Hell and Other Stories", won the Erotic Authors Association Award for Best Collection of the Year, and the title story of "In Deep" was shortlisted for the Rauxa Prize for Erotic Fiction.
 His work has also appeared in over 300 anthologies and magazines, including many editions of "Best Gay Erotica" and "The Best American Erotica".
 He wrote the syndicated column "Sex Talk," and the online columns "Perv" and "Notes of a Cranky Old Fag."
 The online serial "The Dirty Boys' Club,” which he wrote for OutPersonals, was published as a novel in 2012.
 He also curates and co-hosts, with Carol Queen, the San Francisco performance series Perverts Put Out!
 Sheppard is openly gay, and is active in the queer artistic, political and AIDS-activist communities.
 He lives with his husband in San Francisco, where "San Francisco" magazine dubbed him “our erotica king.”
Frank Ripploh (September 2, 1949 – June 22, 2002) was a German actor, film director, and author.
 He is best remembered for his semi-autobiographical 1980 film "Taxi zum Klo".
 The film, produced on a shoestring budget of 100,000 DM, explored the day-to-day life of a Berlin schoolteacher who also led a very active gay sex life.
 Extremely explicit for its day, and for some time afterward (to the point where the film was not passed uncut by the British Board of Film Classification until 2011), "Taxi zum Klo" was considered groundbreaking for the subject matter it portrayed, and achieved something of a cult status among gay audiences of the time.
 In 1987, Ripploh directed a sequel entitled "Taxi nach Kairo", but the film was not considered as successful as its predecessor, and it was not released outside of Germany.
Jearld Moldenhauer was born in Niagra Falls, New York in 1946.
 In 1969 he graduated from Cornell University where he had helped form the Cornell Student Homophile League, which was only the second such homophile group established at an American university.
 In 1969 he moved to Canada and worked as a research assistant at the University of Toronto.
 Here he founded the University of Toronto Homophile Association (UTHA) which held its first meeting on October 24, 1969.
 UTHA was the first gay and lesbian group to be established in Toronto and would eventually grow into the Community Homophile Association of Toronto (CHAT).
 Moldenhauer went on to open the Glad Day Bookshop in 1970, which challenged Canadian censorship laws by selling erotic and gay liberation books, such as "The Joy of Gay Sex".
 He was also a founding member of the monthly magazine, and one of Canada's first significant gay periodicals, The Body Politic.
 He has also been involved in such groups as Toronto Gay Action and the Gay Alliance Toward Equality, and has helped establish the Canadian Gay Liberation Movement Archives, which eventually became the Canadian Lesbian and Gay Archives, one of the largest archives of gay and lesbian documents in the world.
 On February 13, 1972 he became the first gay liberation representative to address a political party conference in Canada when he addressed a session of the New Democratic Party Waffle convention.
Bomgay is a 1996 Indian anthology of short films directed by Riyad Vinci Wadia and Jangu Sethna.
 The film stars Kushal Punjabi and Rahul Bose with music by Ashutosh Phatak.
 It is often regarded as India's first gay film and is known for its controversial gay sex scene in a library.
 "Bomgay" consists of six segments, each based on a poem by Indian writer R. Raj Rao.
The Consenting Adult Sex Bill (Assembly Bill 489) is a consenting adult law, passed in California in 1975 and effective in January 1976, that repealed the sodomy law in California so that it applied only in criminal situations and made gay sex legal for the first time.
 George Moscone, an early proponent of gay rights, in conjunction with his friend and ally in the Assembly, Willie Brown, managed to get the bill passed, 21-20, repealing the existing Californian laws against sodomy.
 The amendment was signed into law by California Governor Jerry Brown.
 The Assembly had a much easier time passing the bill, with final vote on AB 489 being 45-26.
 Gov. Brown signed the bill on May 12, 1975.
Gay Sex in the 70s is a 2005 American documentary film about gay sexual culture in New York City in the 1970s.
 The film was directed by Joseph Lovett and encompasses the twelve years of sexual freedom bookended by the Stonewall riots of 1969 and the recognition of AIDS in 1981, and features interviews with Larry Kramer, Tom Bianchi, Barton Lidice Beneš, Rodger McFarlane, and many others.
Listen to Britain is a 1942 British propaganda short film by Humphrey Jennings and Stewart McAllister.
 The film was produced during World War II by the Crown Film Unit, an organisation within the British Government's Ministry of Information to support the Allied war effort.
 The film was nominated for the inaugural Academy Award for Documentary Feature in 1943, but lost against four other Allied propaganda films.
 It is noted for its nonlinear structure and its use of sound.
The Bolton 7 were a group of gay and bisexual men who were convicted on 12 January 1998 before Judge Michael Lever at Bolton Crown Court of the offences of gross indecency under the Sexual Offences Act 1956 and of age of consent offences under the Criminal Justice and Public Order Act 1994.
 Although gay sex was partially decriminalised by the Sexual Offences Act 1967, they were all convicted under section 13 of the 1956 Act because more than two men had sex together, which was still illegal.
 One of the participants (Craig Turner) was also six months under the statutory age of consent for gay sex which was 18 at the time.
Gay pulp fiction, or gay pulps, refers to printed works, primarily fiction, that include references to male homosexuality, specifically male gay sex, and that are cheaply produced, typically in paperback books made of wood pulp paper; lesbian pulp fiction is similar work about women.
 Michael Bronski, the editor of an anthology of gay pulp writing, notes in his introduction, "Gay pulp is not an exact term, and it is used somewhat loosely to refer to a variety of books that had very different origins and markets" People often use the term to refer to the "classic" gay pulps that were produced before about 1970, but it may also be used to refer to the gay erotica or pornography in paperback book or digest magazine form produced since that date.

Question: Which film was produced first, Gay Sex in the 70s or Listen to Britain?
Answer: Listen to Britain