權Chronology

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5106106707408309001000112012201540160017701800 520–609620–669680–739750–829840–899910–9991010–11191160–12191290–15391690–1769

1

2

1

1

2

1

1

1

1

2

1

2

1

1

1

3

1

2

2

7 +1

2

4

3

5

1

No year recorded 247

+241

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 ↗