久保鉱業事務所書簡

〔事務所書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔事務所書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔事務所書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

日鉄鉱業本部事務所

Iizuka City Historical Museum

ADEAC: A System of Digitalization and Exhibition for Archive Collections

〔建設事務所書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔歓迎事務所書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔大久保書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

旧足尾銅山鉱業事務所付属書庫

古河機械金属株式会社

Tochigi Digital Museum "SHUGYOKU" (Cultural Assets)

〔久保源吉書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保重助書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保千代書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保ちよ書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

久保與市書簡

Saga Prefectual Library

Saga Prefectural Library Database

久保與市書簡

Saga Prefectual Library

Saga Prefectural Library Database

〔久保のぶ書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保ちよ書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保重助書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保源吾書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保与一書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保重助書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保重助書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

〔久保源次書簡〕

Saga Prefectual Library

Saga Prefectural Library Database

久保與市書簡

Saga Prefectual Library

Saga Prefectural Library Database