Here's my latest additions to the collection.
This is a publicity photo for R733.
This is a Roosevelt die proof for Scott 297.
This a card proof for Scott 263. It's one of harder ones to find.
These last two are absolutely new to the philatelic field and came from the estate of Leonard Fellman, the designer of the stamp. They are not listed anywhere. The first is a large original pencil on paper sketch for the design which was not adopted. The second is a black and white photo essay which shows most of the design as adopted but the quote is complete instead of truncated as finally adopted.
There are four more items in that particular file. There is a large rendering of the last image, one in color and a negative. Finally, there is a composite of all five designs which features an enlarged version of the adopted design for this stamp. This was likely a presentation piece given to Mr. Fellman by the BEP.