Early stereoscopic pair of cloud-track photographs, (1913-1914), illustrating electrons ejected by a narrow beam of X-rays (black-and-white print - photograph)
Stereoscopic pair of cloud-track photographs showing the passage of an X-ray beam through a copper target (black-and-white print - photograph)
Photogaphic print and diagram, showing showing secondary beta-rays ejected from air and from a copper screen by X-rays (diagram; black-and-white print - photograph)
Black and white photographic print, stereoscopic pair of cloud-track photographs showing tracks of electrons (black-and-white print - photograph)
Photogaphic print and diagram, showing secondary beta-ray ejected from copper by X-rays together with a secondary beta-ray due to copper K-radiation (diagram; black-and-white print - photograph)
Photogaphic print, showing a secondary beta-ray ejected from platinum by X-rays, together with a secondary beta-ray due to platinum K-radiation (black-and-white print - photograph; diagram; label)
Photographic print, showing the formation of a new isotope of helium by bombarding heavy hydrogen with deuterons (black-and-white print - photograph)
Black and white photographic print, showing the tracks of beta-rays from radium (black-and-white print - photograph; label)
Photogaphic print and diagram, showing delta-rays along an alpha-ray track (diagram; black-and-white print - photograph)