Muni Diaries brings our attention to this groovy 1980 poster advertising a party for the opening of the Castro Muni station. D. Robert Foster, who sent MD the poster, notes:

This is a poster from the May 1980 grand opening party for the Metro system at Castro Street Station. Entertainment by Sylvester, DJs Howie Klein (415 Records), and Larry LaRue. As I remember, ticket holders were eligibile to be among the first people to ride the system by boarding cars at Church Street and then riding right into the party.

Also of note? The $15-20 entrance fee for a no-host bar party. Yikes. Nary a journalist in sight at that bash, we can only assume.

[via Muni Diaries]