Good morning, all: The 31 train order form appears in the 1951 N&W Operating Rules book, but not in the 1967 edition. This prompts two questions: 1) Does anyone know when the 31 train order form was no longer used? 2) Were there operating rule book editions between 1951 and 1967? Best wishes from Boyce, Frank Scheer f_scheer at yahoo.com