Winkler, A. H. (American, twentieth century) Six Illustrations of Famous Persons and Events. 1930s. Monochrome watercolors on board illustrations for historical encyclopedic works likely published in Chicago in the 1930s. There are six illustrations, including Albert Einstein lecturing on his theory of relativity, Gutenberg at his press, Thomas A. Edison in his lab demonstrating an electric light bulb, The Wright brothers at Kitty Hawk flying their airplane, Guglielmo Marconi testing his radio transmission invention, and an unidentified medieval lecturer. Lacking the lettering and titles present in the publication. Images measures 19 x 14 inches. Margins of boards with soiling from matte adhesive, not affecting painted images. One signed. Very good.