Castles & Ruins (Rolemaster: The Standard System) (Rolemaster: The Standard System), by Kirkland, R.C. Jr.
Essence Companion (Rolemaster Standard System #5603), by Jr. R.C. Kirkland
Hackmaster: The Official Game Master's Guide, by Team, The Hackmaster Development
Norek, Intrigue in a City-State of Jaiman (Shadow World Exotic Fantasy Role Playing Environment, Stock, No 6014), by Kevin G. Hosmer-Casey
Races & Cultures, Underground Races (Rolemaster Standard System), by Curtis, John, Reeder, D.
SHADOW WORLD MASTER ATLAS - SECOND EDITION A Fantasy World for Use with Rolemaster, by Amthor, Terry Kevin
Sir Robilar's City of Brass (HackMaster 4th edition RPG), by Rob Kuntz,Jeff Knight
Spell Law (Advanced Fantasy Role Playing, 2nd Ed Stock No. 1200), by Charlton, Peter C. Fenlon Jr., Terry K. Amthor S. Coleman
Tech Law: Complete SF Combat Rules & Vehicle & Equipment Design System (Space Master), by Terry K. Amthor, Kevin Barrett