〔葉書〕 由重宛
Digital Archive. University Archives
〔葉書〕 由正・由重宛
Digital Archive. University Archives
〔書簡〕 由重宛〔由重第一高等学校入学の件〕
Digital Archive. University Archives
〔電報〕 古在家宛
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〔未投函葉書〕 町田咲吉宛
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〔書簡草稿〕 横井〔時敬〕・長岡〔宗好〕・豊永〔真理〕宛
Digital Archive. University Archives
〔葉書〕 清水謙吉宛
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〔葉書〕 Dr.Brebes教授宛
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〔葉書〕 豊永真里宛
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〔葉書〕 清水晋宛
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〔未投函葉書〕 游虎宛
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〔葉書〕 高須虎六宛
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〔書簡〕 服部實宛
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〔書簡（印刷）〕 入澤達吉宛
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古在由直宛
Digital Archive. University Archives
〔葉書〕 古在由直宛
Digital Archive. University Archives
〔葉書〕 古在由直宛
Digital Archive. University Archives
〔葉書〕 古在由直宛
Digital Archive. University Archives
〔葉書〕 古在由直宛
Digital Archive. University Archives
〔葉書〕 古在由直宛
Digital Archive. University Archives
