Support for Online Teaching and Learning

This is the big one. It has all kinds of archived materials from many digital archives. It includes collections of specific kinds of material and the Wayback Machine which allows you to see screenshots from former iterations of Websites.

The Library of Congress has many digital collections including Historic Newspapers, music collections, maps, papers, etc. It's a rich resource for historic primary source materials.

..."is a volunteer effort to digitize and archive cultural works, to "encourage the creation and distribution of eBooks". It was founded in 1971 by American writer Michael S. Hart and is the oldest digital library. Most of the items in its collection are the full texts of public domain books." -from Wikipedia

..."a large-scale collaborative repository of digital content from research libraries including content digitized via the Google Books project and Internet Archive digitization initiatives, as well as content digitized locally by libraries." -Wikipedia

Materials from the Smithsonian Museum. This is another great source for American history, art, and music.

..."free, full-text scholarly articles from hundreds of universities and colleges worldwide. Curated by university librarians and their supporting institutions, the Network includes a growing collection of peer-reviewed journal articles, book chapters, dissertations, working papers, conference proceedings, and other original scholarly work." -from their Website

The NYPL has an amazing digital archive that includes many specific collections that are not just focused on New York. They have curated public domain materials, photographs, papers from historic figures, art, and rotating featured collections that are often topical and well curated.

..."artworks, artefacts, books, films and music from European museums, galleries, libraries and archives." -from Website. This archive is a kind of centralized clearinghouse that brings together materials from all kinds of different museums and cultural institutions from across Europe. It even has a section of "Free to Use" images. There is a lot of art available to explore here.