John Rosenbaum

[8] After graduated from Cornell University in 1957, Rosenbaum moved to the San Francisco Bay Area in the early 1960s, where he contributed to the Harvard Project Physics textbooks.

[9] He was associated with the free school movement in the 1960s, and was a colleague of the educator Herbert Kohl,[10] who described Rosenbaum's educational work in his book The Open Classroom[11][12] and Math, Writing & Games in the Open Classroom.

[13] He designed the Xylopipes xylophone children's toy for Creative Playthings.

He designed the original logo for Herbie Mann's Embryo Records.

Rosenbaum died in Alameda, California, on September 30, 2003, from complications of Parkinson's disease.