paper model 80's Ford & GM wagons You can make your own wagon out of paper for free (if you have a steady hand and patience). 80's Ford wagon http://www.dcmodel.cz/modely/DC_R012B.png And a 90's Ford Taurus wagon... http://www.daytona-mag.com/papercraft/pdf/007.pdf
If you like those, this guy does the 80's GM wagons in paper http://www.flickr.com/photos/14043270@N08/sets/72157627620776532/
And for a little sizzle, you can park your wagons in your paper garage next to your Mustang II Mach 1... Larger, an original 1974 Ford promo piece. TG
The same place that had the Ford wagon has some other interesting paper model vehicles. http://www.dcmodel.cz/ A Ford Hearse A Scenic Cruiser bus They also have the same year Ford sedan, LTD, taxi, and police car.
This site http://www.daytona-mag.com/papercraft/index.html has has a nice selection of classic cars you can download, print and build, such as a 69 El Camino http://www.daytona-mag.com/papercraft/pdf/017.pdf and 32 Ford Woody wagon claasic Mustangs and Corvettes and even a 68 Impala convertible
This site for paper model cars you can print out and make is kind of cool in that it lets you choose the colors you want. But theres not a big selection. There are no wagons, unless you consider a VW bus or a vintage Toyota Land Cruiser to be a wagon. http://www.papercars.net/cars.html