What agencies were developed in the late 19th century?

John Haddon & Co. (1814); G. Street & Co. (1830); C. Mitchell & Co. (1837), publisher of the first newspaper directory in 1845; and Mather & Crowther (1850). John Haddon & Co. (1814); G. Street & Co. (1830); C. Mitchell & Co. (1837), publisher of the first newspaper directory in 1845;