Baltimore was last seen in East Lansing, Michigan on May 30, 1973. He was a junior at Michigan State University. Baltimore's vehicle was found at his home and he also left behind his belongings. Baltimore was discovered missing when his sister went to his apartment to get a paper she'd agreed to help him with. He wasn't there, and his roommates said he'd gone to the library and never returned. In March 1973, Baltimore went to the police and reported that two male attackers had tied him to his bed and stole $110 in cash, a golf bag, a watch and some clothing. One suspect, Roy L. Davis, was arrested and charged with armed robbery. Baltimore was fined $50 for failing to appear at Davis's preliminary hearing to testify against him. Two days later, he asked the police to drop the case, but they refused. He later testified at a rescheduled hearing. Baltimore told his sister that Davis had threatened to kill him. Baltimore disappeared two days before Davis's arraignment. He has never been charged in connection with Baltimore's disappearance. Foul play is suspected in his case, which remains unsolved.