Vol. II: XXI. Letters. Personal Records. Dated Notes: 1373.
The Da Vinci Notebooks
On Wednesday at seven o'clock died Ser Piero da Vinci on the 9th of July 1504.
416:700 : This and the previous text it may be remarked are the only mention made by Leonardo of his father; Nos. 1526, 1527 and No. 1463 are of the year 1504.