Check out this 1947 film about map projections.  Film Description: “Development in long-range travel and the growing importance of the Arctic and Antarctic regions make it necessary to understand how maps may be misleading. Experiments with a grapefruit illustrate the difficulty of presenting a true picture of the world on a flat surface and it is concluded that the globe is the most accurate way of representing the earth.” — National Film Board of Canada

Operation Bird’s Eye is a photographic collection of nearly 400 overlapping aerial images which form a continuous strip spanning the United States from coast to coast. Beginning in Ventura, California and ending over Long Island, New York, these nine by nine inch prints capture a sliver of the American landscape as it looked in 1948. The images were captured during one continuous flight, and when joined together the physical prints stretch 192 feet, showing a slice of land 2,700 miles long.

The flight from which these images were captured took off from the Air Force Flight Test Center (now Edwards Air Force Base) in Muroc, California at 7:40 AM local time on September 1, 1948, first gaining altitude out over the Pacific Ocean before turning east. The plane was a Republic XR-12, an experimental aircraft of which only two were ever built. It was outfitted with K-17 cameras able to shoot a continuous roll of film up to 200 frames. The camera shot at 50 second intervals throughout the duration of the flight, at a constant altitude of 40,000 feet, resulting in a field of vision of around 130 square miles.

The purpose of the XR-12 was photo reconnaissance, and Operation Bird’s Eye was meant as a demonstration of its capabilities. The plane, able to fly high and fast enough to avoid conventional enemy aircraft and fighters, was essentially a flying photography laboratory, with the crew able to process film mid-flight. The Operation Bird’s Eye flight broke records as it crossed the continent, capturing the longest span of aerial photos ever accumulated in a single trip to that point. After 6 hours and 55 minutes, the crew landed at Mitchel Field in Garden City, New York on Long Island.

Click below to read more and check out the images!

Over eighty years after it was originally published, Charles O. Paullin’s Atlas of the Historical Geography of the United States remains one of the most impressive and most useful atlases of American history. Containing nearly 700 individual maps spread across 166 plates, it addresses a broad range of issues. Beginning with a chapter consisting of 33 maps on the natural environment and a second containing 47 maps documenting the evolution of European and later American cartographic knowledge about North America, the atlas mapped an exhaustive number of historical topics: exploration and settlement of the continent, the location of colleges and churches, disputes over international and state boundaries, voting in presidential elections and in Congress, reforms from women’s suffrage to workmen’s compensation, transportation, industries, agriculture, commerce, the distribution of wealth, and military history.  Continue reading →