Jean-Émile Laboureur (1877-1943) Longchamp. 1902. Lithograph. 340 x 230. Laboureur 762, printed in color. Very fine and rare trial proof on thin white glazed vellum, before erasure of lithographed lines around the subject, annotated in pencil "lithographie non achevée" and signed. Fine folds broken in the upper left corner of the subject. Small epidermal marks at the head of the verso leaf. Fine traces of surface rubbing, visible at daylight. Full margins. Final edition of 25 proofs.