イタリアとアメリカの政治関係　1910～1929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 Italy, 1910 - 1929. NARA, RG59. (D.F.711.65) 35mm silver positive microfilm 3 reels with guide.