Thomas Dilworth

The Schoolmasters Assistant

1762 (I ed. 1743).

Thomas Dilworth

The Schoolmasters Assistant

1810 (I ed. 1743).

John Jackson

Rational amusement for winter evenings

Longman, London 1821.

George Arnold e Frank Cahill

The sociable, or, One thousand and one home amusements

Dick & Fitzgerald Publishers, New York 1858.

The Book of 500 Curious Puzzles, Containing a Large Collection of Entertaining Paradoxes, Perplexing Deceptions in Numbers, and Amusing Tricks in Geometry

Dick & Fitzgerald, New York 1859.

W.H. Cremer junior

The Secret Out

Chatto and Windus, London 1859.

Ebenezer Landells

The boy's own toy-maker. A practical illustrated guide

Shepard, Clark, and Brown, Boston 1859.

The illustrated boy's own treasury

Ward & Lock, London 1860.

Ebenezer Landells

The boy's own toy-maker. A practical illustrated guide

D. Appleton & Co, New York 1860 (I ed. 1859).

Gustave W. Treichel

Patent 692559. Puzzle

Official Gazette of the United States Patent Office, Vol. 98 4 febbraio 1902, p. 921.