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One day in 1882, Thomas Edison flipped a switch that lit up lower Manhattan with incandescent light and changed the way people live ever after. The electric light bulb was only one of thousands of Edison's inventions, which include the phonograph and the kinetoscope, an early precursor to the movie camera. As a boy, observing a robin catch a worm and then take flight, he fed a playmate a mixture of worms and water to see if she could fly Here's an accessible, appealing biography with 100 black-and-white illustrations.

Although polio left him wheelchair bound, Franklin Delano Roosevelt took office during the Great Depression and served as president during World War II. How he led the country through tremendously difficult problems, much like the ones facing America today, makes for a timely and engrossing biography. Illustrations.