Essai de perspective pratique : pour rectifier ses compositions et dessiner d'après nature
A practical perspective manual by J. P. Thénot, published by the author in Paris in 1826, written to teach artists how to correct their compositions and draw from nature. Its plates are engraved diagrams that build single-point and two-point perspective around walls, arches, doorways, and figures placed in courtyards and gardens. A designer could borrow the plates' clean construction lines and orthogonals as a reference for spatial layout and vanishing-point structure.
