Though not required of public domain images, if you want to credit the library as the source, please use the following statement: "From the San Francisco History Center, San Francisco Public Library" and provide a link back to the item on our Digital Collections site.
Text from negative sleeve: "The Iowa boys. Company M from Red Oak. L to R: Charlie Longstreet, who lived in the house next west of us in Red Oak, and Frank Throw, who lived a couple blocks west of us on the same street."