Here's a pressing ham at Joann fabrics:

http://www.joann.com/joann/search/se..._requestid=947

Doesn't say online only, so maybe the stores have them.

B Black and Son is my favorite source for canvas:

http://www.bblackandsons.com/sewing-...-68_80_92.html

Just be sure to get the heavy weight.

BTW - when are you going to come down for a vist from that place in the North Country (which I still think of as Camp Drum, because that's what it was called while I was growig up)? You should come down to the Great American Irish Festival this weekend at the Herkimer County Fair Grounds:

http://www.gaif.us/