I have a collection of magazines with Trike articles but for the big street Trikes with VW engines and one off V-8 Trikes from way back in the late 1960's. Some of the issues are in biker magazines with naked lasses sprawled all over the Trikes. Some of the issues showed trikes from Big Daddy Ed Roth and other Builders. I have been in the shops of some of the big time builders like Dick Allen and AEE Choppers.
Steve