History of Unix, Linux, and Open Source - Historical comparison of Unix and the free software movement. CSRG Archive CD-ROMs - The full source archives of the University of California at Berkeley's Computer Systems Research Group, for sale on a 4-CD set. History of the BSD Daemon - Various drawings, pictures, and information on the red devil BSD mascot. Unix Programmer's Manual, Seventh Edition - Archives at Bell Labs of the 1979 manual. Troff source and formatted Gzipped PostScript/PDF versions. The Unix Heritage Society - Built to foster the "the preservation and maintenance of historical and non-mainstream UNIX systems." Mailing list and archives. Includes early Unix source code, from 1973 through the 1990s. UNIX History Graphing Project - Lists of release dates and dependencies for the various Unix flavors. A graphical representation of the Unix family tree is planned. About the FreeBSD Project - History and overview from the FreeBSD Handbook. Unix History - A detailed family tree. The Unix System: History and Timeline - Historical summary and timeline. A History of UNIX before Berkeley - A detailed overview of Unix people and components, 1975-1984. A Brief History of Unix - History of Unix and causes for its popularity. "This document is designed to give people with no previous UNIX experience some sense of what UNIX is. This document will cover the history of UNIX and an introduction to UNIX." VAX Archive - VAX hardware information, articles about VMS and BSD operating systems, Unix and PDP-11 links collections. A Brief Synopsis of Unix History - University of Indiana Knowledge Base article. Summary of Unix versions and links to related entries.