The May Object of the Month exhibit by the Institute Archives and Special Collections is about the physics of baseball, featuring a 1965 letter from Vannevar Bush to his MIT colleague Harold Edgerton in response to a batch of multiflash baseball pictures Edgerton had sent him. Included in the exhibit is a page from Edgerton’s notebook showing two of the photos of the type sent to Bush.
The papers of Bush and Edgerton are available for research in the Archives.