These maps may contain spoilers, primarily in the form of revealing locations you are not yet aware of.
Many of these are based on the hand-drawn maps I created as my girlfriend and I played these games. As such, there are almost certainly errors. What information is on the maps is pretty much whatever I bothered to write down. As such, it's typically just locations, no items or anything else.
The IFM files are for the "Interactive Fiction Mapper", which is the best IF mapping solution I've found so far.
Various games produced by Infocom in the 1980s.
Sherlock: The Riddle of the Crown Jewels. Map (PDF). Source (IFM).
Moonmist. Map (PDF). Source (IFM).
The Lurking Horror. Map (PDF). Source (IFM).
Enchanter. Has partial task information. Map (PDF). Source (IFM).
Sorcerer: Sequel to Enchanter. Has partial task information. v1: Map (PDF). Source (IFM).
Games available from online sources.
Anchorhead: Michael S. Gentry's tail of Lovecraftian horror. Map (PDF). Source (IFM).
Bronze: Emily Short's reinterpretation of Beauty and the Beast. Map (PDF). Source (IFM).
The Chinese Room: Harry Giles and Joey Jones philosophical adventure. Map (PDF). Source (IFM). Walkthrough (long form with explanations, text). Walkthrough (terse, text).
Curses: Graham Nelson's cross dimensional map hunt. Has partial task information. Map (PDF). Source (IFM).
Floatpoint: Emily Short's game of interplanetary diplomacy. Has partial task information. Map (PDF). Source (IFM).
For a Change: Dan Schmidt's surreal story. Map (PDF). Source (IFM).
The Meteor, The Stone And A Long Glass Of Sherbet: Graham Nelson's diplomatic adventure in the far future of the Zork/Enchanter world. Map (PDF). Source (IFM). Walkthrough (long form with explanations, text). Walkthrough (terse, text).
The King of Shreds and patches: Jimmy Maher's Lovercraftian tale in Elizabethan London. Map (PDF) Source (IFM).