Christie’s charges a premium to the buyer on the Hammer Price of each lot sold at the following rates: 29.75% of the Hammer Price of each lot up to and including €20,000, plus 23.8% of the Hammer Price between €20,001 and €800.000, plus 14.28% of any amount in excess of €800.000. Buyer’s premium is calculated on the basis of each lot individually.
Johan Anton van der Boom, 'De Kunstschilder Jaap Weijand' in Op de hoogte, XXIII, May 1926, pp. 105-110.
Kasper Niehaus, 'Jaap Weyand, schilder, glasschilder en graficus' in Elsevier's Geillustreerd Maandschrift, LXXIV, August 1927, pp. 80-96.
Haarlem, Kunstzaal J.H. de Bois, Tentoonstelling Jaap Weijand, 15 May-15 June 1923.
Bergen, Gemeentehuis, Jaap Weijand 1886-1960, 22 June-19 August 1990.