WUBBOLTS-DE BOER, S. U.B. Bakker, A. Galema, Zuster, kom toch over. Belevenissen van een emigrantenfamilie uit Friesland. Brieven uit Amerika in de periode 1894-1933. Sister, please come over. Experiences of an immigrant-family from Friesland/The Netherlands. Letters from America in the period 1894-1933. BMGN - Low Countries Historical Review, [S. l.], v. 118, n. 1, p. 123–124, 2003. DOI: 10.18352/bmgn-lchr.5816. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106673.. Acesso em: 22 dec. 2024.