S.C. Are you asking for a way to see a list of all publications within Medium? I Googled and found this article: http://blog.hubspot.com/marketing/medium-publications-to-follow#sm.00001a5vht9yb5d2wxfujjaexa1mj

And here is an article I found within Medium: https://medium.com/thoughts-on-media/11-medium-publications-you-should-be-following-d3f26157637f#.x0ubqlsct