The Frisians: the 20th century descendants of an ancient nation. Publication of: The Federation of Frisian Museums and Antique Rooms, The Frisian Cultural Council, The Provincial Frisian Tourist Development Association /
Federation of Frisian Museums and Antique Rooms (Friesland)
Mulder, Tiny.
Molen, S. J. van der.
Leeuwarden,
1952.