Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Volkmar K. Wentzel (1915 May 10, 2006), was a German-born American photographer for 48 years for the National Geographic. He helped preserve the magazine''s extensive photography collection.Born in Dresden, Germany, he started taking photographs after he made a pinhole camera with the help of his father, a photo-chemist and amateur photographer. The family emigrated to the United States in 1926 to escape the burdens of post-World War I Germany. In 1935, Wentzel worked as a darkroom technician and news photographer at Underwood and Underwood.In 1937, after taking a collection of night photographs of Washington, D.C., he was hired as a darkroom assistant at the National Geographic Society. His D.C. night photographs were later published in book form under the title Washington by Night: Vintage Photographs from the 30''s (with Judith Waldrop Frank) (Starwood Publishing, 1992).