Spalding's Book on Boxing & Physical Culture by Thomas Inch was written sometime between the late 40s and early 50s. Its main contents are, not surprisingly, on boxing.
The chapter relating to Physical Culture, which contains exercises for Wall Exerciser, Dumb-bells and Barbells, is reproduced below.

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Contributed by Peter Luckin

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The Wall Exerciser

General Exercises - Arms, Abdominals, Legs, Neck

Deep Breathing

Dumb-bell & Barbell work

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