File:US Flag spec TIOH 5-1-17 1967.jpg, the specification drawing from the Army Institute of Heraldry. The official colors are part oftheStandardColor Reference
File:US Flag spec TIOH 5-1-17 1967.jpg, the specification drawing from the Army Institute of Heraldry. The official colors are part oftheStandardColor Reference
"Spectrophotometric and Colorimetric Determination ofthe Colors ofthe TCCA StandardColor Cards". Journal ofthe Optical Society of America 36: 128–159. DOI:10.1364/JOSA