I insist on establishing the following dates indicating my prior paternity, [and the discussions that I held]
1884, 'Grande Jatte' study, exhibition of the Independants
1884-1885, 'Grande Jatte' composition
1885, studies at the 'Grande Jatte' and at Grandcamp; I took up again the 'Grande Jatte' composition October 1886. 4 October [18]85 I make Pissarro's acquaintance at Durand-Rucl's.
1886, January or February, a small canvas by Pissarro, divided and pure color, at Clozet's, the dealer on the Rue de Chateaudun.

'Letter to Félix Fénéon', June 1890