National Geographic : 1931 Nov
Photograph by Clifton Adams THE CENSUS BUREAU SIGNALS, UP TO THE MINUTE, THE NATION'S POPULATION Like a giant score-board which flashes the plays at a baseball park, this clocklike device was set up just after the total count of the 1930 census was reached. Theoretically, 124,156,075 was the population at the instant the cameraman pressed the trigger. Photograph by Orren R. Louden THIS ZERO MILESTONE STANDS ON THE EDGE OFTHE ELLIPSE, SOUTH OF THE WHITE HOUSE In 1920 Congress authorized the Secretary ofWar toerect this monu ment as a point from which alldistances from Washington should bemeas ured. Its exact position islatitude 38°53'42.322" north and longitude 77° 02' 12.492" west. Elevation, 28.65 feet above sealevel.