That division of the company is now Edmund Scientifics,
http://www.scientificsonline.com/
You could try contacting them to see if they have any information. I
expect the telescope is quite simple, meaning that most anything you
might need to understand (adjusting setting circles, collimation) are
going to be pretty generic, and you should be able to learn about them
via information on the Internet that isn't specific to a particular
scope model.