. . "Boston Library Consortium OCA Digitization Project." . . . . . "Census data"@en . . . . . . . . . . "The population of Massachusetts as determined by the sixteenth census of the United States, 1940, arranged by cities, towns and counties, congressional and judicial districts; population of metropolitan Boston (so called); with certain comparisons with former censuses" . . "The population of Massachusetts as determined by the sixteenth census of the United States, 1940 arranged by cities, towns and counties, congressional and judicial districts; population of metropolitan Boston (so called); with certain comparisons with former censuses"@en . "Massachusetts" . . "1940" . .