To avoid assigning duplicate hood linings to colleges and universities that used the same school colors, the Intercollegiate Bureau of Academic Costume (IBAC) used different types of heraldic patterns to divide the two or more colors in an academic hood. In IBAC lists from 1927 and 1948, a number of hood lining patterns were described as “[color] above [color]” or “[color] over [color]”, which referred either to a hood lining divided per chevron, per reversed chevron, or per bar. Unfortunately, today it is not usually known which of these three patterns the Bureau intended to describe.

The Intercollegiate Bureau assigned the Oklahoma School of Mines a hood lining of this type no later than 1927, according to an IBAC list from that period. The hood in this and in all subsequent IBAC lists was described as navy blue above white, without defining the heraldic division of the two colors. Unfortunately, the Bureau erroneously recorded the wrong secondary color of the school, so here the hood lining of Eastern Oklahoma State College has been revised to incorporate the correct school colors of the institution.