by Bill Bores
Allegheny Valley Railroad GP40-3 puzzle, based on an original photo by Bill Bores (photo copyright Bill Bores -- used with permission). Photographed at Gambles, Pennsylvania, October 15, 2019.
The "Easy" version of the puzzle has about 100 pieces, "Medium" has about 200 pieces, "Hard" is about 300 pieces. For the Online puzzles, see the Online Puzzle Tips.