The Internet Archive has been around since 1996 and has a magnificent assortment of genealogical materials in many different categories of interest to genealogy researchers. It is a major resource; not to be missed.
I refer to it several times a week, and it is a major resource for all the links that The Ancestor Hunt curates and includes in its free online link collections for multiple genealogical categories.
Download the Quicksheet PDF
To obtain the one-page QuickSheet pdf for easy reference of what genealogical materials are available at the Internet Archive, you can download it for free by clicking on the Download button:
For all the previously published Quick Reference Guides, click on QuickSheets.
Good Luck and Happy Hunting!