典拠資料:Prelini, Charles. Earth and rock excavation: A practical treatise. 2nd ed., D. Van Nostrand, 1907, vi, 357p. 資料ID:1050250909
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2001928952
画像元資料受入年月日:大正8(1919)年1月23日
典拠資料:Shaw, Herman. A text-book of aeronautics. C. Griffin, 1919, 260p., (Griffin's aeronautical series). 資料ID:1012011720
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2001687562
画像元資料受入年月日:大正9(1920)年3月4日
典拠資料:Winchester, Clarence. Flying men & their machines: A literary and photographic record of facts concerning flying with special reference to those pilots who have so bravely sacrificed their lives and to those who happily still practise the newest of arts: aviation. J.M. Dent, 1916, xii, 242p. 資料ID:1012011761
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2002904879
画像元資料受入年月日:大正9(1920)年10月9日