Black and white photographic print showing a disintegration produced in a lead plate by cosmic rays (black-and-white print - photograph; stereograph)
Black and white photographic print showing a cosmic ray negative electron of 1300 million volts energy (black-and-white print - photograph)
Black and white photographic print showing a shower of over 100 particles (black-and-white print - photograph; stereograph)
Photograph showing a cosmic ray positron of 900 million volts energy (black-and-white print - photograph)
Black and white photographic print showing individual ions of three cosmic ray tracks (early' tracks) (black-and-white print - photograph)