1. The American Union Telegraph Company : lessee of the Dominion Telegraph Company of Canada, connecting with the French Atlantic cable : [map of the United States and eastern Canada showing completed and projected lines] Maps University Of Minnesota Public content 1874. American Union Telegraph Company. Text includes reference to Act of Congress July 2nd, 1874.; Includes directory to offices of the American Union Telegraph Co. and text. 40 x 79 cen... American Union Telegraph Co (New York City).