University of Chicago botanist Dr. Karl Hamner experimenting with artificial lighting for growing chrysanthemums. Dated January 22, 1939. There is some very minor rippling at the edges from the art...
University of Chicago botanist Dr. Karl Hamner experimenting with artificial lighting for growing chrysanthemums. Dated January 22, 1939. There is some minor rippling at the edges from the article ...
University of Chicago botanist Dr. Karl Hamner demonstrating his capping device for growing chrysanthemums. Dated January 22, 1939. There is some minor rippling from the article glued to the back.T...
Former US Secretary of the Navy and ambassador to Mexico Josephus Daniels with Secretary of Foreign Relations Edouardo Hay. Dated January 30, 1939. There is some minor rippling at the edges from th...
