Scope and Contents note From the Sub-Series: Conductor and porter application and service files for the United States and Mexico. Included are an incomplete run of individual porter files, ca. 1910-1964, and a fairly complete run of individual conductor files, ca. 1905-1964, both of which contain applications, photographs, references, physician reports, medical and vaccination certificates, training evaluations, and furlough retirement or dismissal notices. There are also application index volumes: conductors, 1909-1931, and porters,...