recalls a conversation with Mason Robertson, a good friend of Tatlock, in which he claims Tatlock told him she was lesbian. In fact, it is plausible that Tatlock had a relationship with Mary Ellen Washburn. As a psychoanalyst in the 1940s, she saw her homosexuality as a pathological condition to be overcome, which may have led to her eventual suicide. Death Tatlock suffered from severe clinical depression, and was being treated at Mount Zion. At around 1 pm on January 5, 1944, her father arrived at her apartment at 1405 Montgomery Street. When there was no response to his ringing the doorbell, he climbed in through a window. He found her dead, lying on a pile of cushions in the bathroom, with her head submerged in the partly-filled bathtub. There was an unsigned suicide note, which read: Her father found her correspondence and sifted through it, burning letters and photographs in the fireplace. At 5:10 pm he called the Halstead Funeral Home, who contacted the police. The police arrived at 5:30 pm, accompanied by the deputy coroner. At the time of her death she was under surveillance by the FBI, and her phone had been tapped, so one of the first people informed about it was FBI director J. Edgar Hoover, via a teletype link. The news of her death was reported in Bay Area newspapers. Washburn cabled Charlotte Serber at Los Alamos. As the librarian, she had access to the Technical Area, and told her husband, physicist Robert Serber, who then went to inform Oppenheimer. When he reached his office, he found that Oppenheimer already knew. The security chief at Los Alamos, Captain Peer de Silva, had received the news through the wiretap and Army Intelligence, and had broken it to Oppenheimer. Tatlock had introduced Oppenheimer to the poetry of John Donne, and it is widely believed he named the first test of a nuclear weapon "Trinity" in reference to one of Donne's poems, as a tribute to her. In 1962, Leslie Groves wrote to Oppenheimer about the origin of the name, and elicited this reply: A formal inquest in February 1944 returned a verdict of "Suicide, motive unknown". In his report, the coroner found that Tatlock had eaten a full meal shortly before her death. She had taken some barbiturates, but not a fatal dose. Traces of chloral hydrate were found, a drug normally associated with a "Mickey