Included (according to the handwritten notes) are recordings of jazz radio programs, copies of recorded music, and recordings made of the Senior Musicians Orchestra in performance.
There appear, in addition, to be copies of recordings by performers such as the Glen Miller Band, Art Morrow, Thad Jones, Oliver Nelson, and others. Some tapes include comedy routines by Redd Foxx and others.
Some of the privately recorded audio reels and audio cassettes are accompanied by notes and lists that were made by Herb Johnson. Many of these are inserted in the sound recording enclosure, but others are stored in a file folder and it may be possible to relate these to specific recordings. Most of the notes include the date of creation of the reproduction and playing times, and some include the date of the original recording session.