Columbia subject headings:
Harvard subject headings:
Biography
Business.
Chumakov family.
Commerce
Kostroma (Kostromskai︠a︡ oblastʹ, Russia)--Commerce--Biography.
Kostroma (Kostromskai︠a︡ oblastʹ, Russia)--Commerce--History--Sources.
Merchants--Russia (Federation)--Kostroma (Kostromskai͡a oblastʹ)--Biography.
Merchants--Russia--Kostroma (Kostromskai͡a oblastʹ)--Biography.
Princeton subject headings:
Chumakov family.
Merchants--Russia (Federation)--Biography.
Russia--Commerce--History--19th century.