弾Chronology

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500580600670730900110015401680179018001940 510–579620–669680–729740–899910–10991160–15391600–16791690–17891810–1939

1

1

2

3

1

1

2

2

3

1

1

6

1

3

1

No year recorded 60

+54

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 ↗