Hi-
I hope I am not derailing this thread, but there has not been one on this set in a while. I traded for the Dean "postcard" example scanned below. I am sure this was done at home, as the only information on the back is a stamped address and stamp. If it helps this postcard shows these were most likely available in the Minneapolis area in 1934.
Alan Elefson
aelefson@hotmail.com