The MANX online guide is based on the third edition of the Guide to the Manuscript Collections of The Historical Society of Pennsylvania (Philadelphia, 1991). MANX: The Manuscripts and Archives iNformation eXchange has been updated to incorporate the 1993 Supplement to the Guide (previously available only at HSP), to include newly acquired collections, and to correct inaccuracies in previous editions of the manuscripts guides. Like the published guide, MANX is arranged by collection number, and each entry includes a brief synopsis of the content, an indication of the dates of material included, and the size of the collection.

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