I'm a really huge Memphis fan, although I grew up in Iowa. The only access to Memphis I had as a kid was through the Apter magazines. There were also two videotapes (one was called something to the effect of Maniacs and Madmen which I can't find) and this commercially released videotape I found as a sixth grader at K-Mart:
When I started to get back into wrestling again (around 1995), I started to look for Memphis on videotape. I bought a couple of them online, and haven't looked back since.
This was already much more eloquently stated above, but videotape was hugely influential in the '80s into the '90s. Coliseum Videos were awesome as well and had wide distribution.