(1986). Impressionist and modern watercolours and drawings: (Lots 200-290): the Properties of a Deceased Estate, Berlin; the Argo E. Landau Trust, St. Louis; the Estate of the late Anton Peder Nielsen; Mr. H. W. E. Rolfes, Natal, South Africa and from various sources. London: Friday 5 December 1986 Christie, Manson & Woods Ltd..

Impressionist and Modern Watercolours and Drawings: (Lots 200-290): The Properties of a Deceased Estate, Berlin; the Argo E. Landau Trust, St. Louis; the Estate of the Late Anton Peder Nielsen; Mr. H. W. E. Rolfes, Natal, South Africa and From Various Sources. London: Friday 5 December 1986 Christie, Manson & Woods Ltd., 1986.

Impressionist and Modern Watercolours and Drawings: (Lots 200-290): The Properties of a Deceased Estate, Berlin; the Argo E. Landau Trust, St. Louis; the Estate of the Late Anton Peder Nielsen; Mr. H. W. E. Rolfes, Natal, South Africa and From Various Sources. London: Friday 5 December 1986 Christie, Manson & Woods Ltd., 1986.