Callisto, one of the moons of Jupiter, 1979.

Callisto, one of Jupiter's moons, 1979.

Callisto, one of Jupiter's moons, 1979.

Four views of Jupiter, plate 2, 1872.

Four clerks at work in an office, October 1

Tricycle, c 1850.

12-ton coal wagon, 1912. Model (scale 1:8).

Knuckle duster, possibly Spanish, 1701-1900.

Parade, New York. 1963

Dutch socialists in Manchester for an Esperanto Conference, 1936.

New York, 1965.

New York, 1965.