I don't have reliable information about a specific work titled "Landscape at Bouleaux" by Alphonse Legros in my training data. While Legros (1837–1911) was a prolific French lithographer known for his landscapes and genre scenes, I cannot verify the details of this particular print without risking inaccuracy. I would recommend consulting museum collections or catalogues raisonnés of Legros's lithographic work for dependable information about this piece.