How many movies have Joan Ganz Cooney and Jon Stone collaborated on?

They have worked on 5 movies together! Their first movie together was Sesame Street: Old School Vol. 2 (1974-1979) (2008) while their highest rated movie together was Street Gang: How We Got to Sesame Street (2021). They have not worked together since Street Gang: How We Got to Sesame Street (2021).