Wilson, OK has a historical museum. Try a web search for Wilson Oklahoma Historical Museum.I'm sure they would be interested as Lone Grove is not that far from Wilson.
Also, Carter County has a historical museum located in Ardmore (much larger than the Wilson Museum) and not too much further form Lone Grove. The museum has a website. They might be interested.
Also, the Ardmore Public Library has a wonderful collection of historical photos out of Carter and Jefferson Counties.The library might also be interested in the photographs. The library has a website.