That 60 Cadillac wagon is SWEET! There is a black and white photo of a white one in the book: 80 Years of Cadillac LaSalle. It was indeed one of only a few made by Hess and Eisenhardt that year.
I've always liked Caddy wagon coversions, and would like to have a 70 myself. This is a pretty cool thread on The HAMB about Caddy wagons. http://www.jalopyjournal.com/forum/showthread.php?t=315112&highlight=caddy+wagon