lol chill guys. The one I've got is the Leaf Back. It's not actually the RARE Oak Leaf that Mrs. Robinson didn't mention in her handbook. The Oad Leaf was discovered in 1980's, and was unknown till then. The handbook was written in 1955.
Apparently the Leaf Back was the last one of the 81 (or 82 if you include Oak Leaf) to be introduced by the USPCC.
As for the Stag Back, introduced in 1927, and also one of the non-bicycle related designs.