https://docs.google.com/spreadsheets/d/1DSWJLDterZUlpLkH-SE6H-h4ODR0Rsbw/edit#gid=1607109534
Alex Schroeder’s gridmapper
https://alexschroeder.ch/wiki/Gridmapper

This is excellent – so you can create a map by typing, or by code, or via the interface – and save and download in multiple formats. Thanks very much Alex!
AD&D 1e Monster tables combination
“Random monster encounter charts featuring all the dungeon appropriate (i.e. no aquatic, sylvan, etc.) creatures listed in the 1st Edition Advanced Dungeons and Dragons Monster Manual, Fiend Folio, and Monster Manual II.”
PDF link is below – the post comes from :
https://boardgamegeek.com/filepage/116456/comprehensive-1e-dungeon-monster-encounter-charts
AD&D 1e Treasure Tables
https://www.gmbinder.com/share/-M4yja74bCEhn1PYM0nF
Web page version.
AD&D 1e Treasure Tables Github Repository
https://github.com/davidsteimle/treasuretypes
Thanks to David Steimle, less typing required!
Dungeon23 – 005 Ruby Base Level 01 Key 4



4) A giant metallic seeming sea craft is berthed here. GM: Level 01 is the submarine dock as can be clearly seen. Other key descriptions to follow.
Dungeon23 – 004 Ruby Base Level 00


Level 0 as such would be this grid, seen from below, just a hull outline, partially submerged.
GM: Descriptions and details with Level 1. If players encounter via entering underwater in 1800s terms they see the bottom of a seacraft of unknown type and made of something which seems possibly metallic, but also unknown, no obvious joins with slight symmertric ridges.

Dungeon23 – 003 Ruby Base Level 80


Dungeon23 – 002 Ruby Base Level 81


Dungeon23 – 001 Ruby Base Level 82


