One not easily found, because it is in an industrial area off Benson Highway, is the PPEP mural that honors Cesar Chavez and also depicts the original 1957 Chevy bus “La Tortuga” (tortoise) that was used when PPEP started in 1967. The artist is Luis Mena.
Submitted by Neil Amstutz
Update (September 9, 2012): Thanks to Google and an article about the PPEP Farmworker Hall of Fame, I (Jerry) found the mural. It's at 802 E. 46th Street.