* 金石文

[1] [CITE@ja-JP[考古学雑誌 4(3)]], [[日本考古学会]], [TIME[1913-11]], [TIME[2025-02-25T01:55:51.000Z]], [TIME[2025-03-23T06:44:03.166Z]] <https://dl.ndl.go.jp/pid/3548185/1/27?keyword=%E6%B0%B8%E4%BB%81> (要登録)

* 遡及年号

[3] 
[CITE@ja-JP[日本絵巻物全集 第9巻 (平治物語絵巻,蒙古襲来絵詞)]], [[角川書店編集部]], [TIME[1964]], [TIME[2026-03-03T01:08:12.000Z]], [TIME[2026-03-03T09:27:32.966Z]] <https://dl.ndl.go.jp/pid/8798754?keyword=%E6%94%B9%E5%85%83+> (要登録)


* 延長年号

[2] 
[CITE@ja-JP[新相良史話 第1巻]], [[信国正史]], [TIME[1990.2][1990]], [TIME[2026-03-03T01:08:12.000Z]], [TIME[2026-03-03T09:20:56.875Z]] <https://dl.ndl.go.jp/pid/13274968/1/81?keyword=%E6%94%B9%E5%85%83> (要登録)


* メモ


[4] [CITE@ja-JP[板碑概説]], [[服部清五郎]], [TIME[1933]], [TIME[2026-04-28T01:12:07.000Z]], [TIME[2026-05-03T08:13:20.534Z]] <https://dl.ndl.go.jp/pid/1918330/1/348?keyword=%E6%B0%B8%E4%BB%81> (要登録)

永正から永仁への改竄