典拠資料：The Westinghouse Brake Company, limited. Westinghouse Brake Company, 1883, xvi, 50p. 資料ID:1050258431
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2003216890
典拠資料：Standard gauge locomotives, manufactured by The Rhode Island Locomotive Works. Rhode Island Locomotive Works, [18--], 124p. 資料ID:1011822911
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2003406472
典拠資料：Johnson Steel Street Rail. Girder street rails of all kinds, metal cross-ties, joints, chars, rolled and cast, curves, switches, all steel permanent way for street railroads. Courier-journal Job Printing, 1884, 47p. 資料ID:1011825419
https://opac.dl.itc.u-tokyo.ac.jp/opac/opac_link/bibid/2003408070
色：朱
陰陽：陽
形状：正方形
印影外郭：単郭
印文文字数：4
印文改行表記：帝國／大學
Color：Vermilion
Pos./Neg.：Pos.
Form：Square
Outer frame：Single frame
Text length：4
Text with line breaks：帝國／大學