Results for "Cosmic rays -- Research -- History"
Research specimens of Thomas Harper Goodspeed (1887-1966)
Research specimens of Thomas Harper Goodspeed (1887-1966)
Research specimens of Thomas Harper Goodspeed (1887-1966)
Research specimens of Thomas Harper Goodspeed (1887-1966)
Research specimens of Thomas Harper Goodspeed (1887-1966)
Thomas Harper Goodspeed (1887-1966)
David Harker (1906-1991)
- Date: 1968
- Creator: Glena, Don
George Lindenberg Clark (1892-1969)
- Date: 1935
David Harker
- Date: 1942 07/1942
- Creator: General Electric Company
![David Harker (1906-1991), 1968, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-3517].](https://ids.si.edu/ids/iiif/SIA-SIA2008-3517/full/250,/0/default.jpg "David Harker (1906-1991), 1968, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-3517].")
![David Harker, 1942, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-3502].](https://ids.si.edu/ids/iiif/SIA-SIA2008-3502/full/250,/0/default.jpg "David Harker, 1942, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-3502].")