I always suspected that back in the Great Depression as both Winchester and Remington were working on double barrel designs there was a gentleman's handshake and Winchester went side by side and Remington went over/under. We see the prototype Winchester over/under and Louis Stiennon's patents No. 2,095,297, 2,095,296 and 2,106,416 in Schwing's book and at the Cody Firearms Museum in the BBHC.

Several of C.C. Loomis' patents that were applied to the Model 32, actually picture a side by side, and Dennis Sinita showed me the Loomis prototype side by side at the Remington Museum at Ilion a couple of decades ago.