P. V. H. Weems presents navigational equipment to Richard E. Byrd.

While preparing for 1933 Antarctic expedition, Byrd wrote Weems and stated, "Send me a list of the navigation equipment you think we should have. I want all those special gadgets and short-cut methods you believe in."

Distance flier and polar explorer
Type: Photograph
Credit: National Museum of American History, Smithsonian Institution.
Navigators & Inventors
Navigation Methods
Distance flier and polar explorer