Columbia subject headings:
Single women--Employment--Massachusetts--Boston--History--19th century.
Single women--Employment--Massachusetts--Boston--History--20th century.
Single women--Maritime Provinces--Economic conditions.
Harvard subject headings:
Maritime Provinces--Emigration and immigration.
Single women--Employment--Massachusetts--Boston--History--19th century.
Single women--Employment--Massachusetts--Boston--History--20th century.
Single women--Maritime Provinces--History--19th century.
Single women--Maritime Provinces--History--20th century.
Princeton subject headings:
Single women--Employment--Massachusetts--Boston--History--19th century.
Single women--Employment--Massachusetts--Boston--History--20th century.
Single women--Maritime Provinces--Economic conditions.