The Oakland Larks were a West Coast Negro Baseball Association baseball team that was established in 1946 and played for one season only, ending in 1947.
Former Oakland Mayor Lionel Wilson was a pitcher on the team and pitched the first game of the new association.
The teams played in the ballparks used by the Pacific Coast League (PCL) when those teams were traveling for away games.
The league's first official game was between the Oakland Larks and the San Diego Tigers on May 12, 1946 at Fresno Midget Auto Racing Park.
The league played only one season, disbanding after the final game in July, 1946, though the Oakland Larks baseball team would continue to play as a barnstorming club through 1947. When the WCBA disbanded the Oakland Larks were in first place.
Lots of info available via Calisphere.