Though not Bachmann, I know some enjoy old model trains of all makers so I'd like to provide links to recent updates I've made on my sites.
First, the complete TYCO 1981 and 1982 product catalogs...
1981
http://www.ho-scaletrains.net/tycocatalogs/id15.html (http://www.ho-scaletrains.net/tycocatalogs/id15.html)
1982
http://www.ho-scaletrains.net/tycocatalogs/id16.html (http://www.ho-scaletrains.net/tycocatalogs/id16.html)
And I've updated my TYCO US-1 Electric Trucking Resource. This was an interesting variation on the HO-scale slot car offered between 1981 and 1986 by TYCO...
US-1 Electric Trucking
http://www.ho-scaletrains.net/tycous1trucking/ (http://www.ho-scaletrains.net/tycous1trucking/)
Enjoy