1. M.A. de Zwart, who lived in Kleine Laan in Voorburg.
2. For De Hollandsche Teeken-maatschappij, see letter 256, n. 8.
3. For Van Gend & Loos, see letter 135, n. 19 and letter 378, n. 7.
4. Van Gogh earlier quoted from Carlyle’s Sartor resartus: ‘Knowest thou that “Worship of Sorrow”?’, where the phrase stands for the Christian religion. See letter 356, n. 8.
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