Good luck. I only located something remotely similar to one copy, but in one unreadable format, in: ftp.univ-angers.fr/pub2/rfc/rfc/std/std39.txt.gz This file is 3.3k long, instead of the 187 bytes of the official STD39.txt The rest of documents involved in the creation of ARPANET are availables in more or less form in diverse websites. I made one recollection of links if someone is interested. My interest in all these items is diverse. Like a History Student with the focus put in Contemporary History. Same about an important lack of Classic Computing information in our country (Spain) even in Public, Private and Universitary libraries. And finally, with the intention to recreate a simulated Network of IMPs, beginning with the four first installed. It would be curious to see, for example, one PDP10 simulator running TOPS10, one Hercules simulator running OS360, and even one SDS simulator (software ?) with simulated IMPs attached. Don't you think so ? Thanks and Greetings Sergio