signed in monogram at lower right in charcoal: LK (forming a box); at upper right in graphite: 108/160 21/50; verso at upper left in graphite: 7982, crossed out
Anna Koenigs, daughter of the artist [1890-1946], Haarlem; her daughter Kornelia van Eyck-Koenigs, Munich; Wolfgang Ratjen, Munich; purchased 2007 by NGA.
- German Master Drawings from the Wolfgang Ratjen Collection, 1580 - 1900, NGA, 2010: 39, no. 120, under no. 114.