Correction: David Porter Mansion in San Francisco
I love your site, and find it very helpful when responding to our [library] patrons. I wanted to point out a small error (and, a common one) in the key to the large Muybridge photograph.
General (Commodore?) David Porter never owned this mansion; David Porter, a San Francisco liquor merchant, did. See a few lines on Porter here, left page, bottom.
Again, thanks for your good work, and for making your collections available to us "out there."
Librarian, San Francisco History Center
San Francisco Public Library