It is well known that Ray Tomlinson's email system at BBN was the first instance of networked email but not the first instance of (intra-)computer email. The famous documentary film director, Errol Morris, has posted the beginning of a 5-part series about his brother's involvement in the earlier email system CTSS at MIT: http://opinionator.blogs.nytimes.com/2011/06/19/did-my-brother-invent-e-mail... -- home address: 12 Linden Rd., E. Sandwich, MA 02537 home ph=508-888-7655; cell ph = 508-280-0446 email address: dave@walden-family.com; website(s): http://www.walden-family.com/