ホブルスカート
↑ Mrs. Hart O. Berg
↑ Mrs. Hart O. Berg (a.k.a. Edith Berg) entry at the National Air and Space Museum, Aeronautics Division
↑ Mrs. Berg at hobbleskirt.com
↑ Laver, James (2002). Costume and Fashion: A Concise History. London: Thames & Hudson, Ltd.. pp. 224. ISBN 978-0-500-20348-4