The Classic Text Adventure Masterpieces of Infocom CD contains some PDFs with the Infocom manuals, maps and hints. The Infocom Documentation Project (plover.net)) also has PDFs of the same stuff. Is one source better than the other? More complete, or higher quality?
(There’s also the Infocom Gallery ( The Infocom Gallery - a repository of high-quality scans of classic Infocom packages and manuals (guetech.org)), but it’s in image format rather than PDFs.)