Timetable of Cambria and Indiana Railroad in 1923.
No author listed. Publisher is "National Railway Publication Company", New York.
"Official Guide of the Railways...," Volume 56, Number 2, July 1923, p 1111 in original paper version (p 1139 in hathitrust digital version). Accessed through hathitrust.org <a rel="nofollow" class="external free" href="https://hdl.handle.net/2027/uc1.b2999709">https://hdl.handle.net/2027/uc1.b2999709</a>