Here's a pic of an antique CF Martin guitar that some say was the inspiration for the Paul Bigsby/Merle Travis guitar:
And here's a pic of the actual guitar that Merle is supposed to have lent to Leo Fender and which inspired Leo to create the Telecaster:
Merle Travis used to tell everyone that he invented the Fender guitar. Don't know if it was Merle's idea or Paul Bigsby's idea for the headstock design, but it was probably inspired by the old Martin. Regardless, Leo copied it and used it for the Stratocaster.