Front:
Transcontinental Highway near Boulder Dam
CBOULDER DAM SERVICE BUREAU
9A-HI503
Back:
As the road toward Boulder Dam approaches
Black Canyon gorge it winds in graceful,
safely-banked curves along the rugged hills,
a marvel of engineering ingenuity.
DESERT SOUVENIR SUPPLY, BOULDER CITY, NEVADA
"C.T.ART-COLORTONE REG.U.5. PAT. OFF.
