HOEVEN, V.D.; FLIER— Correspondentie tussen C. de Jong en E. van den Hoeven te Soest, 1984, betr. families Van der Hoeven te Soest, 1984, betr. families Van der Hoeven en Flier, manuscript, 5 pag.

Letter of patent for André Michel Massonnet from Paris for an invention regarding “certain improvements in alloys of metal and of other substances and also in the application of the same to various usefull purposes”.