This clinic shares the fascinating results of analyzing Cajon Pass trains sheets for May 1-7, 1945. Learn what a train sheet is; the FileMaker database built to analyze them; and what the sheets reveal-including the numbers, lengths, tonnages and speeds of the trains operated, and the types, numbers and assignments of the engines used to haul them. See a day in the life of a steam helper and the Summit operator. Learn how the railroad was run and the engines you need to model.