My friend William asked me if this could be a photo of his dad playing the uke in 1920 at a picnic in Oldsmar, Florida.
I said "It might be, but this is not your father's Oldsmar, Bill."
And in the truth-is-stranger-than-Gary's-humor category, it turns out Oldsmar was actually founded by auto magnate Ransom E. Olds. No word on whether REO played the uke himself.
Here's the photo, from the State Library and Archives of Florida.