some useful unix links

The Creation of the UNIX Operating System from Lucent.
The Unix Oral History Project from Bell Laboratories.
An Oral History of Unix from Princeton.
UNIX Past from The Open Group.
The Unix Heritage Society by Warren Toomey.
FreeBSD Release Information from FreeBSD.
BSD History Chart from FreeBSD.
Formal NetBSD Releases from NetBSD.
AIX History from Release to Release from IBM.
Darwin/Mac OS X: The Fifth BSD from Applelust.
Sun History from SUN.
The History of Solaris (PDF) from UnixEd.
The Story Behind the Solaris Operating Environment from SUN.
HP-UX History from HP.
Unix and Multics by Tom Van Vleck.
Unix Start from the University of Georgia.
Linux Kernel Archives and Linux HeadQuarters.
20 Years of Berkeley Unix by Marshall Kirk McKusick.
Operating System Technical Comparison from Milo.
Chronology of Events in the History of Microcomputers by Ken Polsson.
The BSD Family Tree from TriBUG.
Grokline's UNIX Ownership History Project.
ZwahlenDesign Unix History by Christian Zwahlen.
IRIX Versions and History by Ryan Thoryk.
Mind Map of Linux distributions by Ravi Kumar.
GNU/Linux distro timeline by Andreas Lundqvist.
Linux Kernel 2.6.8.1 map by OSU.
Yet Another Linux Distro Timeline by greengrass44.
Short UNIX History video from YouTube
OpenSolaris builds.