sentences:  Clark returned to his business interests after leaving Congress, and served as president of the Union Trust Company, Union Pacific Railroad, Michigan Southern Railroad, and other businesses.In addition, he served on the board of directors of Western Union, and the New York Central and New York, New Haven, and Hartford Railroads.He died in New York City on June 19, 1873, and was interred at Woodlawn Cemetery in Bronx, New York.