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Thesis on Stamps and Specifications and Estimations of ten stamp battery of six hundred and fifty pounds of stamps
Source materials for Engineering History: The University of Tokyo Digital Archive
Essay on Progress of Electricity and Telegraphy
Source materials for Engineering History: The University of Tokyo Digital Archive
A Process of Rotary Field Induction Motor Calculation with Kapp’s Clock-diagram
Source materials for Engineering History: The University of Tokyo Digital Archive
Report of Third Year Excursion [Kobe Electric Lighting Co.]
Source materials for Engineering History: The University of Tokyo Digital Archive
電気(作文)〕
Yuzuru Hiraga Digital Archive