Columbia subject headings:
Harvard subject headings:
Flour
Washburn, C. C. (Cadwallader Colden), 1818-1882.
Washburn-Crosby Co.
Princeton subject headings:
Flour mills--Minnnesota.
Washburn Crosby Company.
Washburn, C. C. (Cadwallader Colden), 1818-1882--Biography.