Infocom, founded in 1979, were one of the great studios of the early days of PC gaming, responsible for classics like the Zork series. They may be long gone (Infocom were shut down in 1989), but their history lives on in this incredible collection of old documents.
Zork is one of the oldest adventure game franchises there is. The series is so old, in fact, that aside from a few rare instances you can only play the games using, and seeing, text. No graphics, no icons, no heads-up display, nothing.