Category:Synoptic series of objects in the United States National Museum illustrating the history of inventions

Media from: Hough, Walter (1922). "Synoptic series of objects in the United States National Museum illustrating the history of inventions." Proceedings of the United States National Museum 60 (2404). 1-47, 56 pl. [1]

Media in category "Synoptic series of objects in the United States National Museum illustrating the history of inventions"

The following 59 files are in this category, out of 59 total.