Wikipedia:WikiProject U.S. Roads/Oklahoma/All-time list

Given are the years of the first and last official maps the routes appear on (note that the "1921" map is actually from 1924, and postdates the other 1924 map - it seems to match 1925 pretty well; also 1943 looks to be a reprint of 1941 with the new governor's name added). These are not always the exact years the routes were created or eliminated.