Dont know if these have been mentioned but I am doing some research and came up with these...

http://www.roadsidepeek.com/roadusa/southwest/nevada/vegas/index.htm (make sure you click on some of the links to see the boneyard and old postcards)

http://www.crecon.com/vintagevegas/ (postcards, matchbooks, casino chip replicas)

Hope you enjoy them if you have not seen them before.