Art Books for sale:

Drawing
Speed, Harold
The Practice and Science of Drawing (1917)
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Ackerman, Gerald M.
Charles Bargue: with the collaboration of Jean-Léon Gérôme: Drawing Course (c. 1860)

Painting
Speed, Harold
Oil Painting Techniques and Materials (1944)

Color
Long, Jim – Luke, Joy Turner
The New Munsell Student Color Set (2001 – 2nd edition)

Art books available online:

This is a list of public domain books on art, drawing, painting etc. Click the number beside each title for the links:

A Manual of Oil Painting – John Collier [1]

A Primer of Art – John Collier [2]

The Practice of Oil Painting – Solomon J. Solomon [3]

The Painter in Oil – Daniel Burleigh Parkhurst [4]

The Human Machine – George B. Bridgman [5]

The Art and Craft of Drawing – Vernon Blake [6]

Constructive Anatomy – George B. Bridgman [7]

Painting a Portrait – De Lazlo [8]

The Elements of Drawing – John Ruskin [9]