Ben Vandermeer, an Apple enthusiast in Seattle, was at a Goodwill thrift store when he discovered a stack of Apple’s internal memos from 1979 detailing "Software Security from Apples Friends and Enemies" (SSAFE), a form of digital-rights management (DRM) that Apple was developing. Writes Vandermeer:

This was a proposal to bring disk copy protection in-house to sell as a service to outside developers. Inter-office memos, meeting notes and progress reports all give a good idea of what a project lifecycle was like. Different schemes and levels of protection are considered, as well as implementation primarily on the Apple II+ and the upcoming SARA (The Apple ///) and Lisa computers. Randy Wigginton is featured prominently throughout, along with mentions of Woz and many other familiar names.

All 116 pages of memos have been scanned and made available in the Internet Archive.