I’ve started an archival project for early (pre, alpha, beta) Processing binaries released between 2001 and 2005. Until last week, these files had been hidden in a corner of the Processing servers and not available to anyone. Thanks to Dave for prompting me to dig them up. The files include release notes which are a fun look into the early days of Processing development.
I’ve started uploading them as releases to a dedicated GitHub repository. So far only the 17 earliest releases have been uploaded but I’ll keep at it. In total there are 287 individual files to upload, tag, and check by hand. If you want to help this archival effort, please let me know in the replies 
This work was inspired by @davepagurek who was looking for a version of Processing he could run on his 1999 iMac.
cc @yugeny