ride along once again with engineer Geo Sprague as he prepares Lackawanna engine #1637 for a run to Scranton PA. 1637 is a 4-8-4 Pocono (Northern) "Superpower" Q4 Steamer with 74" drivers and 72,000 lbs tractive effort built by ALCO. Video ends as 1637 crosses Nicholson bridge. Converted from 16mm silent film