The Internet Archive has picked up the TOSEC (The Old School Emulation Center) archives.
The Old School Emulation Center (TOSEC) is a retrocomputing initiative dedicated to the cataloguing and preservation of software, firmware and resources for microcomputers, minicomputers and video game consoles. The main goal of the project is to catalog and audit various kinds of software and firmware images for these systems.
As of release 2012-09-15, TOSEC catalogs over 200 unique computing platforms and continues to grow. As of this time the project had identified and catalogued 466,396 different software images/sets, consisting of over 3.60TB of software, firmware and resources.
The archives are browsable, so individual files can be downloaded rather than a giant .zip for a complete platform - though you can do that, too.
All the pre-Macintosh Apples are represented, as well as Atari, Commodore, and...just about everything else.
The FTP Site Boneyard is also worth checking out, though it's less organized at the moment. Also the Disk Drives collection, which includes snapshots of the Asimov Apple collection.