I am looking for a source from where aircraft plans could be obtained. Scale aircrafts like AT6 Harvard and Spitfires etc.
thanks

bob holman plans,model airplane news,flying models,jim pepinos are some that i know of.

http://www.bhplans.com/

A few places to start:
http://www.donsmithplans.com/
http://www.ziroliplans.com/home_frameset.html
http://www.palmerplans.com/
http://www.fly-imaa.org/imaa/IMAAads/pepino/index.html
http://vaillyaviation.com/Intro.html
http://www.vanvan.us/
http://www.wingspanmodels.com/
http://corsair.flugmodellbau.de/file...an/Bauplan.htm
Also, check out http://www.rcscalebuilder.com/forum/default.asp for many more designers in the forums.

www.rcmmagazine.com

they have alot of plans you can build ur own plane from they have a t-6 and it looks like a nice one. they also have a few spitfires. just look for there plans there will be a link to it on the main page i belive they are about 10 to 20 buck apiece