6. From 1858 onwards Uncle Vincent van Gogh was a partner (‘associé’) in Goupil & Cie. His art gallery in The Hague had been a branch of the firm since then. He had to leave the firm for health reasons in 1872, when he was 53 (from letter 615 it appears that he had lung problems). Evidently the arrangements when he left were not handled as they should have been. Nonetheless he was still a silent partner (‘commanditaire’) in Goupil from 1872 to 1878. See Etat des lieux 1994, p. 149.
8. We do not know whether this sketch, Workmen beside a mound of peat (F - / JH 416), was based on a drawing or a painting.
9. This letter sketch relates to the painting Peat barge with two figures (F 21 / JH 415). The location may be in the Stadnitsky district, which Van Gogh could easily reach from his lodgings by walking along Schooldijk. See Dijk and Van der Sluis 2001, pp. 214-219.
12. The idea that Vincent could perhaps earn something in Theo’s potential new firm may be an indication that Theo was considering switching to printing or publishing. A formulation a few letters later points in the same direction: ‘I wouldn’t have thought that if, say, you’d been able to write, I’m on to something in the sphere of printing, for instance, or — I’ve discovered some bold new artists with whom I’ll be able to do something’ (letter 407, ll. 69-72).