Volume 21.Parades and Marching (5 pages); Performing Arts (24 pages); Phonograph Records (2 pages); Playwrights (3 pages); Poet Whose Words were Set to Music (5 pages); Poet Who Wrote on Musical Subjects (1 page); Singers, Choir (5 pages); Singers, Minnesingers (4 pages); Singers, Opera (1 page).
Volume 22.Singers, Opera (5 pages); Singers, Popular (5 pages); Teachers, Music (2 pages); Teaching, Music Academies (10 pages); Teaching, Musical Theory (1 page); Teaching, Music, Advertising (1 page); Translator of Psalms (1 page); Shakespeare (27 pages).
Volume 23. (Box) Large objects, or descriptive information (13 items).