Peter Bos applied for a passport in September 1919. He had blue eyes, a straight and narrow nose, a small mouth, and a small and pointed chin. He had light brown hair and was wearing a moustache. His stature was 5 feet, 9½ inches (176½ cm). The application also mentions another daughter, Nellie Bos. She was born at Pierre, South Dakota, on 29 Oct. 1914.
N.B. Bos is a very common surname in The Netherlands, and this Peter Bos is not related to me - as far as I know, but he is a namesake of my brother.
Sources: United States Passport Applications 1795-1925, WieWasWie.nl, Family Search Civil Registration, Noordam History, Stamboom Zegert-Vis.