Here's a couple of unusual old shots of a Simplicity Sovereign, dressed for the winter, courtesy of Chris Geise. Chris works for the company that built these cab enclosures. See his comments below.
To quote Chris:
"The photos of the Sovereign in winter dress are 2 of several taken in series for the cab installation manual. The date of the manual is 1966 so this particular tractor falls within a year or 2 of this date. Frequently we design cabs on prototype, or engineering test tractors. That was true back then as well, so some of the tractors have no decals or designations visible."
Thanks again, Chris, for sharing with us. We'd love to see more of these old photos.... Kent