Complete Guide to Phantasy Star III  
   Contains walkthroughs, enemy lists, maps, script, game bugs, codes, fan fiction, wallpaper, music, and emulation downloads.
   http://www.classicgaming.com/ps3/

RPGamer.com  
   Includes walkthrough, MIDIs, and artwork.
   http://www.rpgamer.com/games/ps/ps3/ps3.html

GameFAQs  
   Contains walkthrough, guide, and player reviews.
   http://www.gamefaqs.com/console/genesis/game/6638.html

GameWinners.com  
   Contains codes and FAQs.
   http://www.gamewinners.com/GEN/PhantasyStar3.htm

Mike's RPG Center: Manuals  
   Contains text-only version of the game manual.
   http://mikesrpgcenter.com/manuals/genesis/phantasystar3.txt

RPGClassics.com  
   Contains character, item, technique, and enemy lists, maps, and a walkthrough.
   http://www.rpgclassics.com/shrines/genesis/ps3/

Phantasy Star III Unofficial  
   Contains artwork, a FAQ, and character information by the game's character designer.
   http://ape.pro.tok2.com/t-ozaki/e-htm/