The guide was compiled by Librarians in the Prints and Photographs Division at The Library of Congress.
From the Research Guide:
The following list cites public institutions with custody of at least one newspaper photograph morgue in the United States and Canada. Researchers should contact directly the institutions listed for current information on policies and procedures, as well as on the photo morgue itself.
Direct to Newspaper Photograph Morgues
Note: Many of the links only provide information about collections, finding aids, etc. However, we were able to find a limited amount digitized material from several of the photo morgue collections listed.
Background about newspaper photo morgues in this “Picture This” blog post by Barbara Orbach Natanson