Collier's New Encyclopedia (1921)/Hartford City
HARTFORD CITY, a city of Indiana, the county-seat of Blackford co. It is on the Pittsburgh, Cincinnati, Chicago and St. Louis, and the Lake Erie and Western railroads. It is the center of an important natural gas and oil region and has manufactures of paper, tile, brick, wagons, and glass. Pop. (1910) 6,187; (1920) 6,183.