ArchiveGrid? Never heard of this? Well, neither had I until I stumbled on a blog post extolling its virtues. Here’s their description of this service:
ArchiveGrid includes over 5 million records describing archival materials, bringing together information about historical documents, personal papers, family histories, and more. With over 1,000 different archival institutions represented, ArchiveGrid helps researchers looking for primary source materials held in archives, libraries, museums and historical societies.
You can browse by state with the map on the home page or through the drop-down menu below. For example, when I looked at the Washington State Library, I found this:
Very useful for our genealogy and local history researchers!