I have been watching the classified here for a few of the firearms I am looking to put in my collection but they have not come up yet
I dont have an account on gunbroker and not happy whit a lot of the sellers policies so I would rather stay away from them.

I have bought from a few on line retailers such as J&G and  southernohiogun.com but rather buy from a person them a company because may get better deal

is there any other places to look for person to person C&R deals?

I've had great success on local Facebook groups that feature milsurps.

I live in Maryland and the gun laws are so stupid here it isn't really worth buying local on a c&r. If it is a long gun I could just do face to face and no need for the licence if I buy a hand gun in state we still have to go trough the state police or ffl. But if I buy a handgun out of state from out of dtate sellet on c&r it can be sent right to me like it should be. It makes no real since.

Gunboards

This.   I check it often, interesting things come up there regularly.

armslist.com is a good site

Also, ask in the Maryland Hometown Forum if there are any Maryland specific firearms forums.