You have 19 of 19 known Atari 7800 - Technical Manuals (DMC-v2015-04-30) sets

2600 & 7800 Development Kit (1988)(U)
3600 Controller Options (1983)(U)
3600 Electrical Design Review (1983)(U)
3600 Software Guide Rev 2 (1983)(U)
7800 High Score Card Interface
7800 High Score Cartridge (2000)(U)
7800 Keyboard Scheme (1984)(U)
7800 Keyboard Software Guide (1984)(U)
7800 NTSC Schematic Diagram (1984)(U)
7800 Software Guide (1987)(U)
7800 Sound Development Tool (1988)(U)
7800 Standards & Procedures (1987)(U)
7800 Trakball Schematics (1983)(U)
Atari 7800 Manuel D'utilisation (1989)(Fr)
Atari 7800 Owner's Manual (1984)(U)
Atari 7800 Owner's Manual (1987)(U)
GCC1702B Maria Chip Specification (1984)(U)
Maria-2 Handy Hints (1983)(U)
Repair Flowchart