Final answer:
The Omega Bulletin was published in 1951, with no specified editor for the 'Omega Bulletin' found in the provided information. ONE Magazine, a prominent LGBT periodical that followed, was first published in 1953 by Matatchine Society members.
Step-by-step explanation:
The first Omega Bulletin was published in 1951. Although the available information does not specify an editor associated specifically with the 'Omega Bulletin', it is notable that within this time frame, Mildred Constantine compiled a report titled 'The poster collection' for the Bulletin of the Museum of Modern Art. The focus of the Omega Bulletin remains unclear, hence requiring further context to accurately identify the editor. However, in a broader context of LGBT periodical publications, ONE Magazine stands out as a pioneering publication, launched in 1953 by members of the Mattachine Society in Los Angeles. The magazine was groundbreaking for managing to sustain production and reach a national audience, covering bold topics such as same-sex marriage and anti-LGBTQ persecution. The magazine faced significant challenges, including having issues confiscated by the United States Post Office due to alleged federal obscenity violations.