Digging Into Data: List of Data repositories

"Below is a list of digital libraries, data archives, and data repositories that are inviting Digging into Data researchers to use their collections.  For each repository, you'll find a description of their contents, contact information, and other details. This list is being frequently updated, so check back often!  If you are a digital repository and would like to be included on this list, please get in touch with us ..."