The Library Company of Philadelphia Save
Specializes in the history and background of American culture from the colonial period to the end of the nineteenth century; with an overview of the collection, access to the online catalog, and general information.
http://www.librarycompany.org/   

US Holocaust Memorial Museum Library Save
Resources for family history and other research as well as access to the online catalog.
http://www.ushmm.org/research/library/   

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