A couple of more things to try - If you are interested in the large (5 ft wingspan or more) planes, do a search on this sites forums for the following:
plans
vintage planes
vintage kits
radio assisted free flight
etc. Also, if there are some clubs nearby, try visiting their meetings, In any club of 50 or more, you will probaby find some guy who enjoys building, has quite a few plans, and who loves to talk about construction methods and finishing methods. Also, unless you are building scale models, you will probably want some engines just to use for display and mounting a prop. Swap shops are a good source of engines, particularly if you dont care about them running.