Mississippi transportation map, 1949, sheet 6. Call number: MA/2002.0147 (c) MDAH
These maps were recently digitized and made available online:
Map of the state of Mississippi showing state owned lands as of Jan. 1, 1934. Call number: MA/2002.0105 (c). Link to the catalog.
Mississippi minor civil divisions, beats, 1941. Call number: MA/2002.0138 (c). Link to the catalog.
Mississippi transportation map, 1949. Call number: MA/2002.0147 (c). Link to the catalog.