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Representation of Republican opinion in the USA

1920-1970

First models of the 'impossible triangle' and 'impossible staircase'

1955-1959

Thirteen puzzles

1920-1970

interlocking models with a tray for manipulating them

1920-1970

3D Histogram

1920-1970

Finger print models

1920-1970

Drawing of models demonstrating self-reproducing mechanisms

1920-1970

Wooden puzzle

1920-1970

Loose pieces of models demonstrating self-reproducing mechanisms

1920-1970

Collection of models demonstrating self-reproducing mechanisms in chemistry and biochemistry

1920-1970
Karyotype made by Lionel Penrose, Ca. 1963

Karyotype made by Lionel Penrose, Ca. 1963

circa 1963
Sheet music 'Palindrone in F Major', made by Lionel Sharples Penrose, mid 20th century

Palindrone in F Major

1920-1970
Collection of models demonstrating self-reproducing mechanisms in chemistry and biochemistry, with puzzles and other items, made by Lionel Sharples Penrose, mid 20th century (see part and stroke records)

Collection of models demonstrating self-reproducing mechanisms in chemistry and biochemistry

1920-1970
Three interlocking objects, made by Lionel Sharples Penrose, mid 20th century

Three interlocking objects

1945-1955