Hidden in Plain Sight: Musical Treasures in the Penn Library Curated by Marjorie Hassen Otto E. Albrecht Music Library University of Pennsylvania

Day Book of Music Transactions Joseph J. Mickley, 1799-1878 Day Book Manuscript, 1840-1848 Ms. Coll. 388 Joseph J. Mickley maintained an active career in Philadelphia as a piano builder, tuner, and teacher; he also repaired stringed instruments and sold accessories. His customers included some of Philadelphia's musical and social elite, among them Charles Hupfeld, Benjamin Cross, William Fry, R. La Roche, the Biddles, and the Wetherills. His day book includes a record of his accounts from January 1840 through May 1848. Detailed are his services and the fees paid by his customers (who lived as far away as Wilmington, Delaware) for piano lessons and tuning and for the sale of instrument-related items, including bows, rosin, and strings.

Table of Contents Introduction Manuscript Collections: Institutions Manuscript Collections: Individuals Sheet Music Images Conducting Scores Music Manuscripts: 15th-18th Centuries Music Manuscripts: 19th & 20th Centuries Landmarks of Music Theory