Each time the PRR made a major divisional reorganization, the accounting department released a new set of divisional maps. We hope to post as many full sets as possible; we would appreciate loan for scanning of any other sets.

1927 Division Accounting Maps. Provided by J. McDaniel.

1941 Division Accounting Maps. Provided by Robert O'Leary.

1951 -- we know these exist but have yet to locate a set.

1956 -- we know these exist but have yet to locate a set.

1958 Division Maps.

1964 Division Maps via multimodalways.org.