詠Chronology

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61067073080011001590168018001900 620–669680–729740–799840–10991130–15891600–16791700–1799

1

1

1

1

1

1

1

1

1

33 +27

3

1

1

2

28 +22

1

3

No year recorded 90

+84

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗