Boaters were popular as casual summer headgear in the late 19th century and early 20th century, and were supposedly worn by FBI agents as a sort of unofficial uniform in the pre-war years.
Boaters were popular as casual summer headgear in the late 19th century. Boaters were popular as casual summer headgear in early 20th century. Boaters were supposedly worn by FBI agents as a sort of unofficial uniform in the pre-war years.