Just realized that George M has already bookmarked this site for you that I was going to mention.
http://www.coachbuilt.com/bui/c/campbell_midstate/campbell_midstate.htm For those of you that didn't go there at first (like me) it has a short history of the Campbell company, shows a picture of the woodie that started this thread and shows an ad for Campbell-built station wagons ( the bottom picture) which mentions the same models, I believe, that Spanky is referring to.
Nice find, George.
Let's see the ad says we could call them at "Waterloo 66" to get some more info .............I guess we'll need a time machine to make that call.