オランダとアメリカとの政治関係　1906～1929年／米国国立公文書館（NARA）所蔵　米国国務省機密文書
Records of the Dept. of State relating to Political Relations between the United States and The Netherlands, 1910 - 1929. (D.F.711.56) NARA, RG59. 35mm silver positive microfilm 6 reels with guide.