* 延長年号

[1] [CITE@ja-JP[平泉町史 総説・論説編]], [[平泉町史編纂委員会]], [TIME[1988.2][1988]], [TIME[2026-01-20T01:30:11.000Z]], [TIME[2026-02-13T09:06:06.807Z]] <https://dl.ndl.go.jp/pid/9540572/1/242?keyword=%E6%94%B9%E5%85%83> (要登録)

* メモ

[2] [CITE@ja-JP[板碑概説]], [[服部清五郎]], [TIME[1933]], [TIME[2026-04-28T01:12:07.000Z]], [TIME[2026-05-03T08:37:25.200Z]] <https://dl.ndl.go.jp/pid/1918330/1/350?keyword=%E5%A4%A9%E6%B2%BB> (要登録)

偽造板碑