When looking around on Ebay USA I found the following auction of a photograph
Vtg Original USAF Military Airplane Photo Prop Plane Biplane Unknown | eBay
which has on the back a stamp '
The R. L. Cavanagh Photo Collection'. As I found out the full collection of the late R.L. Cavanagh was donated by the family to the Wright State University, Dayton
http://www.libraries.wright.edu/spec...iles/ms353.pdf.
The question is what is actually auctioned? An original piece of the collection (that should be in Wright State University), a print made of a negative held in the Wright - Cavanagh collection (is this legal ?) or any other possibilities.
When you look at this seller you will see he has quite a lot of aviation pictures for auction, which look surprisingly 'new' (new prints made ?) and incidentally also show some clinks in the aviation history knowledge of the seller.
Tork1945