Here's a Willys railroad inspection rig from https://www.facebook.com/HeritageRailway?fref=nf via http://justacarguy.blogspot.com/2015/03/swiss-rail-road-inspection-willys-jeep.html:
Here is a screen shot of a late 50s/early 60s Wagon from the movie Easy Rider, care of imcdb.com (http://www.imcdb.org/vehicle_50916-Willys-Maverick-1959.html):
Here are a few shots of the extremely rare 1959 "Harlequin" model of the Wagon:
(From Milwaukee Art Museum, Brooks Stevens Archives via http://ruralwillys.tripod.com/historia/brooksstevensenglish.htm)
(From: Jeep: The History of America's Greatest Vehicle, by Patrick R. Foster, page 69)
(From ebay.com)
Lastly, here's one of the very early 1946 Wagons, supposedly in front of Brooks Stevens' house:
(Also from Milwaukee Art Museum, Brooks Stevens Archives via http://ruralwillys.tripod.com/historia/brooksstevensenglish.htm)