Robinson played a prominent role in the national development of the American mural movement of the 1930s; in the creation of important New Deal murals in Washington D.C.; and, as Art Director of the Colorado Springs Fine Arts Center, in the creation of a mural-painting curriculum that resulted, between 1936 to 1940, in the award of forty federal mural commissions to his students and twenty to members of his teaching staff.  The mural is one of only three major murals by Boardman Robinson to survive intact in its original location; it is one of only two examples of Robinson's work associated with the U.S. Treasury Department's Section of Fine Arts Program; it is Robinson's only United States Post Office mural; and it has distinction as the sole major Robinson mural to reflect the impact of Colorado regionalism on his stylistic evolution.