High Quality Content by WIKIPEDIA articles! The Oakland Oaks were a minor league baseball team in Oakland, California that played in the Pacific Coast League from 1903 through 1955, after which the club transferred to Vancouver, British Columbia. The team was named for the city and used the oak tree and the acorn as its symbols. Along with the Los Angeles Angels, Portland Beavers, Sacramento Solons, San Francisco Seals, and Seattle Indians, the Oaks were charter members of the Pacific Coast League which was founded in 1903.