Archives are the current holding institutions of sources.
|Folger Shakespeare Library (US-Ws)|
|Georgetown University, Special Collections Joseph Mark Lauinger Library (US-Wgu)|
|Library of Congress (US-Wc)|
|National Gallery of Art (US-Wnga)|
Organizations are corporate entities that have been involved in the history of a source, typically as an owner, creator, or seller.
|Folger Shakespeare Library|
Sources that have had their origins in this city.