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Microfilms sent by Yale for the 2008-2010 Mellon-funded cataloging project are now shelved in rows 4a and 4b 4A of the Cage. There is an inventory in SharePoint.
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- have someone at Houghton check the Theatre Collection Autograph File
- look it up in Chadwyck-Healya National Inventory of Documentary Sources
- look it up in Barbara Marienholz-Wolff's Music Manuscripts at Harvard