West German rearmament - Wikipedia
History of Germany (1945–1990) - Wikipedia
2 Deutsche Mark (Ludwig Erhard) - Federal Republic of Germany
Introduction of the Deutsche mark in West Germany
Allied-occupied Germany - Wikipedia
Allied-occupied Germany - Wikipedia
GERMANY, FEDERAL REPUBLIC. 20 Deutsche Mark, ND (1948). P-9a. PMG
HGSS - IUGG evolves (1940–2000)