Dimensions of the U.S. Flag, from 3 CFR, 1959-1963 Comp., p. 368 (Executive Order 10834)
United States Office of the Federal Register
1959-08-21
<a class="external free" href="https://commons.wikimedia.org/wiki/File:Title_3_CFR_1959-1963_Compilation.djvu">https://commons.wikimedia.org/wiki/File:Title_3_CFR_1959-1963_Compilation.djvu</a>, p. 368