| DATE | LOCATION | CITATION | TEXT INDEX ENTRY | 1777.09.10 | Philadelphia | CITATION | Mentz, William, sells forte piano, chamber organ | 1779.03.16 | Philadelphia | CITATION | Mentz, William, sells Thirteen Hymns, suited to the Present times [t] | 1779.03.23 | Philadelphia | CITATION | Mentz, William, sells Thirteen Hymns, suited to the Present times [t] | 1779.04.06 | Philadelphia | CITATION | Mentz, William, sells Thirteen Hymns, suited to the Present times [t] |