I also have The Lost Treasures of Infocom, and back in the 80's, had the 5 1/4" floppy disk versions of virtually all of the Infocom games. They were (are) brilliant. Zork I and Mystery Mansion (non-Infocom) were the first all-text adventure games I played back in '81.
Ah, yes. The Great Underground Empire. The sword of elvish antiquity. Zorkmids. Your trusty lantern, which you always needed because, if it were dark, you would likely be eaten by a grue. I can't say enough about the quality of the writing and the cleverness of the puzzles in those games.
My favorites were the entire Zork series and Lurking Horror. The latter was set late at night in the buildings and tunnels of a university. Excellent game.