Volumes 1-25 and 37 were read by machine from the printed index books and are not all checked yet. A mistake? Fix it on that volume's index page and the fix shows here.
Every topic in all the volumes' indexes together. Under each topic, each volume's pages, what is said there, and links to the sicha: its PDF open at the page, and its text. 3,492 topics · 37,219 references · 35 volumes. No source has been found yet for the indexes of volumes 26-29.