曽根静夫書簡　原保太郎宛二通　原保太郎は上州碓氷郡倉渕で来年の大河ドラマの主人公小栗上野介を捕え、処刑した人物とされている。

Listed on Yahoo! Auctions Japan by a third-party seller. Photos and the full description are on the original listing (in Japanese).

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