1. On 6 May 1870 a Seascape was sent by Johannes Christianus Schotel to the art gallery of H.V. van Gogh (Uncle Hein) in Brussels (RKD, Goupil Ledgers). In 1871 this work was sent on to one of the Paris branches, but it must have been sent back to Brussels at some point, since Van Gogh saw it there when he visited the city (between around 15 August and 15 October 1872; see letter 11, n. 8). It is not known whether the work was again sent to Paris.

2. Van Gogh was in Brussels in the summer of 1872; see letter 4.

3. Uncle Hein and Aunt Mietje in Brussels.

4. Edouard Hamman.

5. Letter 5 of 17 March.