An old 1920's era photograph taken at the San Diego Zoo. San Diego California. June 2013.

An old 1920's era photograph taken at the San Diego Zoo. San Diego California. June 2013., a photo by Eddie from Chicago on Flickr.

I took this photograph of a vintage photograph, during my recent June 2013 vacation to San Diego California.

This photograph dating back to the 1920's era, shows the shuttle sightseeing bus once used at the San Diego Zoo.

This photograph was found hanging on a wall inside one of the zoo buildings near the public rest rooms.