On line Plan sources:
There are a lot of places to get plans now some are free, and have a lot of designs. Here are some that have a lot of control line content. Usually the plans are in PDF, sometimes full size and you can take them to Kinkos to print them out. To support the building contest I have started a small plans page
The most well known plan archive is outerzone. This plan site gets a majority of its plans from RC groups. they have plans for all classes of model airplanes
you do not have to sign up and there is an archive list.
Other sites require a free membership. Aerofred ( I didn't pick the name) has a lot of airplane ship and other plans. It requires free membership
Hi Pocket aeronautical is a builders forum that has a plan site lots of CL and FF stuff there as well as scale information. You do need a free membership.
There are other sites that sell plans
Our AMA, god love them for $ 75 them plans should be free?
AMA plans service http://www.modelaircraft.org/plans/plans.aspx
Flying models: I hope the magazine comes back
Flying model plans service
Model airplane news
Model airplane news still has some ukie stuff in it.
Barry Baxter plan service
There are many others but you get the idea.