This image is a derivative work of the following images: File:Dyson_Frank_signature.jpg licensed with PD-self 2009-04-27T13:29:32Z Astrochemist 551x153
DescriptionFrankWatsonDyson Bonn 1913.jpg English: (L-R): Frederick Stratton, John William Nicholson, K. Schwarzschild, FrankWatsonDyson ride in automobile