This is a treasure trove of information, literature and memorabilia relating to the Aries 300 modular synthesizer of the late 1970s. I was a huge fan of Aries, and at one point had over 200 modules of Aries and Digisound!
This binder has the following literature included:
* 16 original Aries PCB blueprint layouts
* 3 original Aries catalogs for the 300 modular system - probably 1977, 1978 and 1979
* an Original Aries Decal, never used - about 6 inches square
* 2 Aries schematics - AR324 Lag Inverter and AR313 Keyboard Interface
* Various Aries literature, including letters from Rivera Music Services, Promo sheets for Aries Kits and the System 300
* A complete original Aries 300 System Owner's Manual
* And the piece de resistance, an original Aries FlexiDisc by Mark Styles, demoing the System 300.
Full pictures are available, showing all the pieces of literature:
https://drive.google.com/drive/folders/17o34chXultKuewoXNGUASdvKrhP5lwqI?usp=drive_link