Filters
Walter Dorwin Teague
designed 1932
Frederick C. Carder
about 1920–33
Frederick C. Carder
about 1933
Frederick C. Carder
about 1920–29
Frederick C. Carder
about 1933
Frederick C. Carder
1925–30
Frederick C. Carder
1925–30
Frederick C. Carder
1925–30