Columbia subject headings:
Printers--Biography.
Wulling, Emerson G.
Wulling, Emerson G.--Interviews.
Harvard subject headings:
Printers--Biography.
Printers--Minnesota.
Printers--Wisconsin.
Wulling, Emerson G.
Wulling, Emerson G.--Bibliography.
Wulling, Emerson G.--Interviews.
Princeton subject headings:
Printers--Minnesota.
Printers--Wisconsin.
Wulling, Emerson G.--Bibliography.