Beekelaar, G.A.M. “H. Van Fekius, H.J. Metselaars, Noordhollandse Statenleden 1840-1919”. BMGN - Low Countries Historical Review, vol. 110, no. 4, Jan. 1995, pp. 602-3, https://doi.org/10.18352/bmgn-lchr.4154.