Kat (갓), or horsehair hats, represented upper-class status in Korea as only the yangban were allowed to wear them. That, and the fact that they were carefully crafted of very thin material such as bamboo and horsehair, gave kat-makers much pride in their work. Later, they were worn by craftsmen and merchants (Cho 1996 vol. 1, p. 88). 1906-1933 East Asia Image Collection, Imperial Postcard Collection, Lafayette College.