This field mentions the names of teachers or masters. What is at issue are the teachers who made a significant contribution to the development of a students, as opposed to every instructor they ever had. See also the ‘Training’ field.
M. de Haan Hettema en A. van Halmael, Stamboek van den Frieschen, vroegeren en lateren adel..., Leeuwarden 1846, dl. I, p. 258
Onderzoek R. Harmanni (1995)
This field specifies the location of the various RKD documentation materials. Most of the locations refer to our art-historical image documentation. In addition, you will find references to press documentation (cuttings and small articles) here.