Jean Messagier (1920-1999) Machine to stop a migration of pigeons. 1974. Drypoint and aquatint. Sheet size: 910 x 630 mm. Alpers 230, printed in color. Very fine proof on vellum, justified E.A , titled and signed in pencil. Slight traces of folding. Full margins. Final edition of 50 proofs. J. Putman éd. Joint: Untitled. 1959. Lithograph. The sheet: 655 x 495 mm. Alpers 119. Printed in color. Fine trial proof on vellum, annotated Epreuve d'essai and signed in green pencil. Small corrections in pencil in the subject. Annotations in pencil on verso. Small traces of oxidation only visible on verso. Full margins. Final edition of 50 proofs. Provenance: artist's descendants. Set of 2 p.