In today's senate hearing, James Comey admitted he leaked his memos to the press through a friend at Columbia University. Comey did not name this friend, but it is Daniel C. Richman.
Richman's contact info is public information on the Columbia University website. Since Comey during his testimony said he had no problem if his friend released the memos, people should feel free to contact Professor Richman in an attempt to get these memos out. The media has so far only cherry picked a few, so it would be interesting to get the rest.
http://www.law.columbia.edu/faculty/daniel-richman
James Comey's Twitter friend at the Washington Post, Ellan Nakashima, was quick to reveal Richman was the close friend in possession of the memos, immediately following the Comey testimony.
All of this was easy to find after having remembered James Comey's Twitter account being exposed a few months back, after he made some off the cuff remarks about having one.
http://gizmodo.com/this-is-almost-certainly-james-comey-s-twitter-account-1793843641
I just went back and started googling the people on his twitter friends list. I thought maybe I'd directly find the Columbia Professor, but after one by one googling the friends I found after googling Nakashima, like Twitter friend #3 of Comey, her article exposing Richman had already been published, while Comey was still testifying.
What a tight knit group of friends!