Claim: William Hanna worked at at least one company.
Evidence: In 1937 , while working at Metro-Goldwyn-Mayer -LRB- MGM -RRB- , Hanna met Joseph Barbera.
Metro-Goldwyn-Mayer Studios Inc. -LRB- abbreviated as MGM or M-G-M , also known as Metro-Goldwyn-Mayer Pictures , Metro-Goldwyn-Mayer or simply Metro , and for a former interval known as Metro-Goldwyn-Mayer/United Artists , or MGM/UA -RRB- is an American media company , involved primarily in the production and distribution of feature films and television programs.