Roosevelt, Cornelius Van Schaak, Mr.

(Color test for unidentified print)

Escher's Father, G.A. Escher

Chrysanthemum

Bookplate Bastian Kist

Young Thrush

Self-Portrait in a Chair

Female Nude in a Landscape

"Never Think before You Act"

Perfume (Bad Smell)

Castrovalva

The Bridge

Street in Scanno, Abruzzi

Illustration for "The Terrible Adventures of Scholastica"

Bookplate Dr. P.H.M. Travaglino

Bookplate G.H.'s-Gravesande

Bookplate G.H.'s-Gravesande

Fish

New Year's greeting-card 1951, L. and K. Asselbergs

Devils

Self-Portrait in Spherical Mirror

Rippled Surface

Ascending and Descending

Circle Limit IV

Tessellation of Fishes

Mobius Strip I

(Color test for unidentified print)

(Color test for unidentified print)

Daylilies