Southeastern Pennsylvania Transportation Authority (SEPTA) AEM-7 puzzle, based on an original photo by Robert L. Sartain (photo copyright Robert L. Sartain -- used with permission). Photographed at Eddystone, Pennsylvania, September 7, 2017.
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You can easily customize the background color and number of puzzle pieces, along with other adjustments to enhance your puzzling experience. See the Online Puzzle Tips.