Quadrant Press Review 6 - The Remarkable GG1 (Pennsylvania Railroad) By Karl R. Zimmermann Books / Paperback Transportation › Railroads ISBN: 091527616X / Publisher: Quadrant Press Inc., January 1977 Price $25.04 Free Shipping Send to a friend Used - Good Good condition. Number 6. Short gifter's inscription on front inside cover. (trains, locomotives, railways) $25.04 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.