In her 1968 thesis on and catalog of Hopkinson's music, Caroline Richards identifies and describes four manuscript volumes containing music composed by Hopkinson. Three of these are in the Hopkinson holdings in the Penn Libraries
- A volume with the cover title "Lessons" (Folio M1 .A11 H6 vol. 12; Richards manuscript "B")
- A fragment of a song book (Folio M1 .A11 H6 vol. 15; Richards manuscript "C")
- A harpsichord album (Ms. Codex 14; Richards manuscript "D")
The first manuscript, from ca. 1759, is at the Library of Congress, and the Library of Congress holds another manuscript volume dated to the 1780s (see below for links).
The Hopkinson Collection of Music consists of fifteen bound volumes containing both printed and manuscript music collected by Francis Hopkinson (1737-1791), Joseph Hopkinson (1770-1842), and Oliver Hopkinson, (1812-1905). Included in this set are copies of printed music printed mainly in London. The Hopkinson Collection was acquired for the library by Otto Albrecht, whose papers are also in the Kislak Center.
- View records for the music in the fifteen-volume Hopkinson Collection of Music in the Franklin catalog
Additional Hopkinson music items include General Washington's March and four scores by Hopkinson owned and perhaps performed by Marian Anderson.