ScientificAmerican1891-04-18.jpg Photoplay 1929-12ThumbnailsPhotoplay 1929-12ThumbnailsPhotoplay 1929-12ThumbnailsPhotoplay 1929-12ThumbnailsPhotoplay 1929-12Thumbnails
Centennial celebration of the establishment of the United States patent system.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner