Columbia subject headings:
Dmitriev, Maksim Petrovich, 1858-1948.
Mail art--Russia--20th century.
Harvard subject headings:
Dmitriev, Maksim Petrovich, 1858-1948--Catalogs.
Mail art--Russia--Nizhegorodskai͡a oblastʹ--Catalogs.
Nizhegorodskai︠a︡ oblastʹ (Russia)--Biography.
Nizhegorodskai︠a︡ oblastʹ (Russia)--Pictorial works.
Postcards--Russia--Nizhegorodskai͡a oblastʹ--Catalogs.
Princeton subject headings:
Dmitriev, Maksim Petrovich, 1858-1948.
Mail art--Russia--20th century.