Sidney J. Kolpas

David Copperfield's Orient Express Card Trick

The Mathematics Teacher, N. 7, Vol. 85, october 1992, pp. 568-570.

Movable stationery

Vol. 1, N. 1, Movable Book Society, New Brunswick, september 1993.

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Vol. 1, N. 2, Movable Book Society, New Brunswick, november 1993.

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Vol. 2, N. 1, Movable Book Society, New Brunswick, march 1994.

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Vol. 2, N. 2, Movable Book Society, New Brunswick, june 1994.

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Vol. 2, N. 3, Movable Book Society, New Brunswick, june 1994.

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Vol. 2, N. 4, Movable Book Society, New Brunswick, september 1994.

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Vol. 3, N. 1, Movable Book Society, New Brunswick, february 1995.

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Vol. 3, N. 2, Movable Book Society, New Brunswick, march 1995.

Movable stationery

Vol. 3, N. 3, Movable Book Society, New Brunswick, april 1995.