Sketchbook No. 34 (Japan)

Sketchbook No. 36 (Japan: Kamakura)

Sketchbook No. 17 (Japan: Ōiso etc.)

Sketchbook No. 27

Sketchbook No. 23 (France)

Sketchbook No. 39 (Holland: Muiden and Sluis)

Sketchbook

Sketchbook No. 14 (Sino-Japanese War)

Sketchbook

Sketchbook No.3 (Travel in Belgium、Blankenberge)

Sketchbook, Fish

Sketchbook, Bird

Sketchbook, Mammal

Sketchbook, Insect

Sketchbook, Turkey

第34帖(KO16-325-34)

Sketchbook, Winter

Sketchbook, Summer

Sketchbook

Sketchbook

Sketchbook, Spring vol. 1

Sketchbook, Spring vol. 2

Sketchbook, Autumn vol. 1

Sketchbook, Autumn vol. 2

Parkett no. 34