1923: Wilhelm Robert Adolf Trinks, b. 6 May 1904 in Streator, Illinois, applying for registration as an American citizen. His father Gustav Adolf Trinks, b. 11 Dec 1869 in Bunzlau, Germany, immigrated to US ca. 1900, and resided in Streator until 1915. The family then left for Aarhus, Denmark for the purpose of Wilhelm attending school. Wilhelm (at least) is now back in Streator. He is 19, unmarried, no children, 5 feet 7 inches, brown eyes, light hair, fair complexion (US Consular Registration Applications 1916-1925).

1930: William Trinks, 25, born in Illinois, clerk steel mill, lives with parents Adolf and Helen Trinks, both born in Germany (US Census, Hammond, Indiana)

1937: "William Trinks, head of the Dormagen-Hessville branch" (at the Dormagen Conservatory of Music and Dramatic Arts in Hammond, Indiana) (The Hammond Times, 4 Jan 1937, p. 11)

1937: "Lachner's "Prelude and Toccata," was played by William Trinks with clarity and precision and maturity in style" (The Hammond Times, 17 June 1937, p. 8)

1939; "The closing number was the two-piano concert number "Les Preludes," Liszt, a masterpiece seldom heard owing to the fact that it is so extremely difficult to perform. Inez Crooks and William Trinks, at two grand pianos, gave a vivid and masterful interpretation of this selection" (The Hammond Times, 23 June 1939, p. 10)

1940: William Trinks, 35, born in Illinois, production clerk steel mill, lives together with Adolf Trinks, 70 and Helen Trinks, 61, both born in Germany (US Census, Hammond)

1956: "William Trinks, secretary of the Hammond Chess Club" (The Times, Hammond Indiana, 18 Sep 1956, p. 17)

1958: William R Trinks, clerk, in 2714 Cleveland, Hammond, Indiana (US City Directories)