Railway Mail Service. Railway mail clerks, hearings before subcommittee on S. 4895, to regulate hours of service, mileage, and relative seniority rating of employees in Railway Mail Service, and S. 3950, amendments intended to be proposed by Mr. Martine of New Jersey to S. 3950, governing hours of labor and mileage of railway postal clerks, Mar. 17-25, 1916.