Roelofs, Pieter. 2014. “Gold for Houkje Gerrits Bouma: The Women’s Skating Competition on the Stadsgracht in Leeuwarden on 21 January 1809, Painted by Nicolaas Baur”. The Rijksmuseum Bulletin 62 (2): 152-87. https://doi.org/10.52476/trb.9845.