Black and white photographic print showing model of cyclotron built by Ernest Orlando Lawrence and C.J. Cooksey (black-and-white print - photograph)
Black and white photographic print showing model of cyclotron vacuum chamber almost in place between the poles of the electro-magnet (black-and-white print - photograph)
Black and white photographic print showing model of cyclotron between the poles of the electro-magnet ready for operation (black-and-white print - photograph)
