[TUHS] license

Hi, I am curently writing an article about the history of open source. I know all you can find on the Internet about the history of unix and BSD and the conflict between these two when BSD decided to opensource. But I could never find a copy of both licenses in the early days. I would like to give examples of a license on which the source of a software was delivered in the 70's. I browsed thru the sources of unix v5 and the only copyright I found was in the code of the c compiler and it just stated that it was copyrighted by Bell labs in 1972. I would think that there was some kind of hard copy copyright that came with the tape on wich the sources were originaly delivered. For BSD I found in the source of 2.11BSD a reference to "The Berkeley software license Agreement" but I don't have a copy of that document. I would appreciate if someone would communicate with me by e-mail or thru this list to give me some info about all that. -M.R.-