However , SH - 48 's designation was still in use from May 1938 to February 1941 .
At this time , SH - 99 followed the same basic corridor of the present - day route from Madill north to Kansas .
SH - 99 - 48 's designation was still in use from May 1938 to February 1941 .
At this time , SH - 99 followed the same basic corridor of the present - day route from Madill north to Kansas .