The pad on the Parker Bros. SBT is the D - W pad by D - W Manufacturing Co., 360-L Sixth St., Elyria, Ohio. Huntley was taken over and added to the Jostam line after The Great War. Fray - Mershon also had their "Blue Line" recoil pads. There was a pad called "Black Diamond" I found an ad for in the April 1930 Field & Stream, and a while back someone posted pictures of a Philip S. Olt pad which looked much like the 'Black Diamond.' Then there are numerous "trade branded" versions of the Red Head Pad. I'll email you a few pictures Drew.