Atari Internal Memos (some Encyclopedia Project but most not) 290 pages
Stein Kay Atari Memos Pt 2
Atari . . . Stein to Kay re TIES and Qube
Internal Atari docs - not related to IE project 1982-1983
Project Xanadu, Ted Nelson May 1982
Atari Internal Memos
Atari Manuals and Owner Guides