De natuurlyke, burgerlyke en staet’s-gesteldheit van Zwitserland, geschetst in eenige brieven (…) aan William Melmoth. Harlingen / Leiden, v.d. Plaets / Herdingh, 1780.

Archives of the cotton mill ‘De Coster & Rousseau’ in Gent (Belgium), ca. 1850-1962. Large box with manuscripts, letters, financial documents, brochures, price lists, etc. concerning this firm, located at the Place des Chartreux 11 in Gent.