When I was going to University I helped a guy once who set up the folk singers when they came on campus. If memory serves there is an organiser on every campus in America. I'd call your local College and ask for that person. I'll bet they could tell you how to get in that loop.

All my stage stuff is old news and the few I do now is with friends for the local irrigation group or similar folks.

Talent agencies charge for their service is all I know. I never made enough to use one!

Good luck!

Peace - Steve