I have uploaded Indologica Taurinensia volumes 1-45 to Archive.org for posterity:
If anyone can supply the faulty PDFs, please send them to me and I'll add them to the archive.

I've also added a link to this material on the "external resources" page of the INDOLOGY website, under the heading "Digital Preservation."

Best,
Dominik

Dominik Wujastyk
INDOLOGY list committee member
Please do not reply to me personally: reply to indology-owner@list.indology.info