Always a good suggestion to share here as well.
A couple general observations in regard to Internet Archive (I use the site daily):
- Text searches are usually more effective when the search term is put in quotes, otherwise you get back hits that match each word...which can be a HUGE amount (tens of thousands).
- When looking for text material (vs audio, film, pics), always chose the 'text' option instead of the 'metadata' option. The text option searches via OCR, so it's looking for matches in the actual books, articles, documents, etc.
- When a search is done using the meta data option, you're at the mercy of whatever terms the creator (uploader) used to describe the file. (I've been mystified more than once by what some people put.)
Sharing on subject-focused sites such as this forum is always(!) helpful, but last year's demise of the Army Air Forces.com forum was a harsh (brutal, heart-wrenching, sad) reminder that websites rarely last. Internet Archive is designed to be an exception. A non-profit, it has tremendous funding from both individual contributors and major foundations. The technical longevity features in place go way, way beyond standard protocols.