collection

Mountain landscape, black chalk and watercolour on paper 24.7 x 31.0 cm, signed l.r. (indistinctly) and dated (indistinctly) 196[2?]

Amsterdam in winter, with the tower of the Zuiderkerk, watercolour on paper 52.0 x 66.5 cm, signed l.r. and without frame

Cavalerist, watercolour on paper 8.7 x 8.4 cm, gesigneerd r.o.

Sint Nicholas; on the reverse: two drawings of Dutch folk tales, Indian ink heightened with white on paper 14.5 x 21.7 cm, executed ca. 1920

Toy animals, chalk on paper 40.1 x 64.7 cm, signed l.r. and dated 1906

A portrait of Jan Peter Moes as a baby, coloured pencil and chalk on paper 32.6 x 27.9 cm, signed l.r. and dated 1920

Triple tandem, watercolour and gouache on paper 59.4 x 89.4 cm, signed l.r.

Geheime industrie (Secret industry), pen and ink on paper 26.9 x 20.9 cm, signed l.c. and dated '56, without frame

Summer flowers, watercolour and gouache on paper 51.0 x 34.0 cm, signed l.r.

Together in the whirligig, pastel on paper 43.0 x 63.0 cm, signed l.r. and dated '15

Horse carriages on a farmyard, pen on paper 14.6 x 24.0 cm, signed l.r. and dated 'Den Haag' 1910

The Leidsestraat in Amsterdam, pastel and watercolour on paper 28.2 x 20.2 cm, signed l.l.

Feeding the baby, watercolour on paper 48.0 x 40.3 cm, signed l.l.

Sky jumping, black chalk and watercolour on paper 48.0 x 38.0 cm, signed l.l.

Composition, gouache on paper 22.1 x 20.7 cm, signed l.r. and dated on the reverse 14.II.1967

A view of the Westertoren, Amsterdam, watercolour on paper 67.2 x 42.0 cm, signed l.r.

The German waitress, pen, ink and pencil on paper 21.0 x 18.9 cm, signed l.r.

At the casino, pastel on paper 60.0 x 64.5 cm, signed l.l.

Self portrait of the artist, ink on paper 26.7 x 26.4 cm, signed l.r. and dated '57

Abstract composition, pen and gouache on paper 18.0 x 25.0 cm, signed l.r.