俟Chronology

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830900111015401660172018001930 840–899910–11091160–15391550–16591670–17191730–17991880–1929

2

1

1

1

1

1

1

1

1

2

2

9 +3

1

1

No year recorded 9

+3

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 ↗