PDP-10 - Wikipedia

Emulating your very own DECSYSTEM-10 (PDP-10)

TENEX (operating system) - Wikipedia

PDP-9 - Wikipedia

PDP-11 - Wikipedia

PDP-10 I/O Bus - Computer History Wiki

VA Viper: Here, on one sheet of paper, is a map of the entire internet as of 1973

PDP-11 - Chessprogramming wiki

DECsystem-10 Kermit for TOPS-10

start []

PDP-10 - Wikipedia

File:Before-and-after image of extensive photo retouche on picture of a DEC PDP-10 (DECsystem 10) mainframe computer system.jpg - Wikimedia Commons

Zork Origins, Zork Wiki