http://pec.lib.wvu.edu/record/P65071905Rules and regulations for the government of the Operating Department.Monograph. "The rules herein set forth … take effect December 1st 1905, superseding all previous rules and instructions inconsistent therewith."Norfolk and Western Railway Company. Operating Department.Norfolk and Western Railway Company--Rules and practice.Railroads--Management--Handbooks, manuals, etc.Norfolk and Western Railway Company--Management.14256