Sierra Sacramento Valley Medicine

The paddlewheel riverboat predates the gold rush by two years, but this particular paddlewheeler, the Delta King (and its sister ship, the Delta Queen) was a later version, built in 1927. It ferried passengers between San Francisco and Sacramento into the 1930s.

This 35 mm photo of the Delta King was taken in Old Sacramento during last year's Jazz Jubilee by Sacramento anesthesiologist Dr. David J. Ruderman.