Its original services were operated with steam locomotives .
Kings County is now coextensive with the borough of Brooklyn in New York City , but at the time the railway started , it consisted of several towns and the smaller independent city of Brooklyn .
Kings County 's original services were operated with steam locomotives .
Kings County is now coextensive with the borough of Brooklyn in New York City , but at the time the railway started , it consisted of several towns and the smaller independent city of Brooklyn .