Keywords: Oklahoma 36A 1948 oversize.svg SH-36A shield of the 1950s “1960s design based on ftp //ftp pikepass com/Original 20Construction 20Drawings/HE 20Bailey/cont271/SH009 tif the OTA sign detail own 2012-06-01 Scott Nazelrod Public domain credit appreciated but not required Oklahoma State Highway shields 1948 oversize 036A |