What was the average cost for a community college in 1970?

I'm doing a research paper for my college english class and I need the average college costs for 1970. I have the costs for a 2 year Associates degree %26amp; 4 yr from a pubic college and the average cost for a 4 yr private college. This is all I need left. Can anyone help please?|||It depends on where you are talking about. In California, where high real estate taxes help pay for colleges, it was $15.00 per class.