Ferry Boatman Challenges Steamboat Monopoly
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Charles Babbage Invents Mechanical Calculator
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
English Gentleman Invents Photography
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Lindbergh Takes Off On Transatlantic Flight
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Professor W.C. Röntgen Discovers X-Rays
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Engineers Detonate Huge Blast In New York
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Chester Carlson Invents Machine To Copy Documents
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Alamo Falls, Texas Army Retreats
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Arrested Alchemist Must Make Gold To Win Freedom
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
