Guy Fullerton over on the Knights and Knave Forums (focused on AD&D, OD&D, and OSRIC) has graciously posted his comprehensive spreadsheet of nearly every release in the Old School Renaissance. It is still a work in progress but incredibly useful as is.
Hoard and Horde an OSR Timeline
Hoard and Horde List View
“Real” Magick in RPGs, Continued..
2 hours ago