Color: #ffd700

Poster, Happy Birthday, for I.B.M. Corporation, 1980s

On a white ground, bordered by gray frame, 1, 2, 4, 3; 1 in green, 2 in purple, 4 in blue, and 3 in yellow, surrounded by colorful streamers and confetti. Lower right, a Charlie…

Poster, New York Skyscrapers Around Central Park, 1963

Cityscape, in yellow, red, blue, and green, from Central Park perspective, surrounded by buildings. Text in red ink: MUSIC in the air everywhere—AM 93 FM—WPAT.

Drawing, Akropolis: Brown, Yellow, Purple, 1910–28

Pattern of arabesque-petalled blossoms in yellow and light lavender with mustard yellow dots and dark purple circles, with leaves and stems in dark purple in the interstices on a brown background.

Drawing, Fixstern: Orange, Yellow, Olive, 20th century

Roundels with starbursts and other geometric shapes in green, orange and yellow.

Textile, Populus, 1985

Black “puzzle pieces” each containing a different design in khaki. The of edges of the pieces are defined in bright colors: red, yellow, green, blue.The design is non- directional.

Poster, Imagination is more important than knowledge / Brio, 1987

Silhouette of a boy’s profile in blue with cogs in bright colors overhead. Lower margin in white on black border: Imagination is more important than knowledge / Einstein. BRIO logo.

Brooch (Netherlands), 1985

In plastic box with tape label. Label reads: “Magnetic Pin designed by RONNE LOWENSTEYN in 1985. Make your own design or colour combination with the MAGNETIC PIN.”