Manuscript Processor and Curator of Manuscripts, Emeritus
![man next to bust of Franklin](/sites/default/files/styles/blog_contributer/public/user_pictures/IMG_2018.jpg?h=eebaf6c7&itok=fphb0O9K)
Charles Greifenstein has retired from full-time work at the APS. At the time of his retirement he was Associate Librarian & Curator of Manuscripts. His retirement project is processing the papers of mathematician and physicist Freeman Dyson.