I've also started the following webpage (and am
looking for
additional
links).
http://www.mess.org/main.php
There are several non-micro emulations in there, including PDP-1 TX-0
and 990/10
http://www.cozx.com/~dpitts/ibm7090.html
http://www.cozx.com/~dpitts/ti990.html
Dave Pitts' 7090 and TI990 pages
http://www.unlambda.com/
Brad's Lisp Machine pages