Archiwum Związku Bojowników o Wolność i Demokrację - teczka "Życiorysy, relacje, poglądy": materiały dot.: Henryk Walczak, imię ojca: Jan, ur. 15-07-1921 r.
International relations. Circulates "Polska a Zagranica" (1925). No. 31-40/25.
International relations. Circulates "Polska a Zagranica" (1925). No. 11-20/25.
Correspondence - economic issues. Polish-Brazilian trade (1941). Correspondence with Polish Missions in New York, Curitiba, Buenos Aires, London, Lisbon concerning political and economic problems. Statement of the Polish Government on German-Soviet war, 1941.
Correspondence - economic issues. Polish-Brazilian trade (1943). Polish-Brazilian economic relations, 1943.
International relations. Circulates "Polska a Zagranica" (1925). No. 1-10/25.
International relations. Circulates "Polska a Zagranica" (1924). No 1-10/24.
Correspondence - economic issues. Polish-Brazilian trade (1939). Polish-Brazilian trade relations and investments, 1938.
International relations. Circulates "Polska a Zagranica" (1922). No. 21-28/22.
International relations. Circulates "Polska a Zagranica" (1922). No. 11-20/22.
