On a Wednesday afternoon in late November, less than 20 minutes from my Brooklyn apartment, I dropped into a very special place where I found myself watching photographs of trains pop off the page in WAITING FOR THE CARS: Alfred A. Hart's Stereoscopic Views of the Central Pacific Railroad, 1863-1869, while LOCOMOTIVE author/illustrator and 2014 Caldecott winner Brian Floca explained the difference between stereoscopic and anaglyphic 3D images.

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