Smith constructed the
Grand Rapids, Kalkaska and Southeastern Railroad in Michigan in 1897 and became owner of the Lowell and Hastings Railroad in 1900. In June 1901, he was honored with the degree of Master of Arts by
Dartmouth College. He was owner and publisher of the
Grand Rapids Herald in 1906 and chairman of the board of directors of the Goodrich Company, which owned the Graham and Morton Steamship Line, the largest operator of steamboats from
Chicago to various
Lake Michigan ports. In 1909 he defended Federal employee and civil rights activist
Robert Pelham Jr. who was arrested when gathering information from witnesses after a black woman was beaten by a white police officer who was arresting her. Pelham was acquitted in the case. Smith was married on October 21, 1886, to Nancy Alice ("Nana") Osterhout (October 21, 1859 – February 15, 1936) of Grand Rapids. They had one son, William Alden Smith, Jr. who died on April 19, 1920, at the age of 27. The second Disabled American Veterans chapter ever organized was in
Kentwood, Michigan, and is named for him. The younger Smith was married to Marie McRae, daughter of Milton A. McRae of Detroit. This couple had a son, William Alden, III, who died on December 16, 1968, in San Diego, California at the age of 52. They are all buried in the family mausoleum at Woodlawn Cemetery, Grand Rapids, Michigan. == Death and legacy ==