1. The meeting between Van Gogh and the painter Charles Angrand supposedly took place ‘in the café opposite the Chaptal, Boulevard des Batignolles’ (i.e., the Collège Chaptal, where Angrand held a teaching position); see François Lespinasse, Charles Angrand 1854-1926. S.l. 1982, pp. 26-27.

2. This exchange did not take place. See Welsh-Ovcharov 1971, pp. 37-39.

3. In 1886 Boggs had his studio in boulevard de Clichy. See Arsène Alexandre, Frank Boggs. Paris 1929, p. 47.

4. This exchange did not take place. See exhib. cat. Amsterdam 1999, p. 161.

5. ‘Moulin de la Galette’ refers to the part of Montmartre where there were three windmills: the Moulin de Blute-Fin, the Moulin Radet and the Moulin à Poivre. Van Gogh had finished several works in which one or more of these mills can be seen. He may have had two of the following four in mind for the exchange: The Moulin de la Galette (F 227 / JH 1170), The Moulin de la Galette (F 228/ JH 1171), The Moulin de Blute-Fin (F 274 / JH 1115) and The Moulin de Blute-Fin (F 273 / JH 1116). The latter two are signed. In the event, the exchange with Angrand did not go ahead.

6. We do not know which work by Degas Theo had in the gallery at this time. See Thomson in exhib. cat. Amsterdam 1999, p. 107.

7. Charles Angrand, Dans la basse-cour (Feeding the chickens), 1884 (Copenhagen, Ny Carlsberg Glyptotek). Ill. 497 . Angrand later mentioned this proposed exchange to Gustave Coquiot. See Verzamelde brieven 1973, vol. 3, p. 173.

8. This business card of Theo’s (Boussod, Valadon & Cie) was still with the letter in 1961 according to a letter from John Rewald to V.W. van Gogh, New York, 15 December 1961 (Van Gogh Museum, Documentation).