[ÉCOLE POLYTECHNIQUE] || POWER, Charles. Épures - Ecole Polytechnique – 1856-57-58. 1856-57-58.

Collection of drawings, by Charles Power (X-1856).
The structure of these drawing as taught at the Ecole Polytechnique is often the same, with parts more or less developed, and drawings more or less elaborate according to the times and students.
We thus find drawings of curves, surfaces, perspectives, shadows, stone cut, architecture, machine and gears, topography and fortifications.
Of particular note in this collection are the 17 architectural plates, most of them colorful.