As of 11/03/2003

Series 1615: Traffic Flow and Volume Maps. 1938-1998.
Highway Department (RG 55).

Small and large scale Mississippi highway maps and county highway maps showing traffic volumes on sections of highways between cities and towns for the years indicated.

See also:

Series 1503: Maps (annotated with Federal aid and maintenence). 1939-1958 (for copies of the 1949 and 1950 traffic volume maps).
Average daily traffic count maps by county: 1988191
Average daily traffic count maps by county: 199118467
  
Traffic Flow Maps, Claiborne Co. (OS): 1942 (x2), 194719975
Traffic Flow Maps, Kemper Co. (OS): 194119975
Traffic Flow Maps, Lafayette Co. (OS): 1938 (x2)19975
  
Traffic Volume Maps: 1958-59, 1961, 1963, 1965-1967, 1973-74191
Traffic Volume Maps: (OS): 196719975
Traffic Volume Maps: 1978, 1980-1984, 1990, 1994-95, 1998191