MICHAUX, FRANÇOIS ANDRÉ. The North American Sylva; or a Description of the Forest Trees of the United States, Canada, and Nova Scotia...translated from the French...with notes by J. Jay Smith. Philadelphia: Robert P. Smith, 1851. 3 vols. Second American edition, first issue, 156 hand-colored engraved plates. Stafleu & Cowan TL2 5966; MacPhail 24a -- NUTTALL, THOMAS. The North American Sylva; or, a Description of the Forest Trees of the United States, Canada, and Nova Scotia, not described in the work of F. Andrew Michaux. Philadelphia: Smith & Wistar, 1849. 3 vols. 122 hand-colored engraved plates. Stafleu & Cowan TL2 6930. Together 6 volumes, original gilt-decorated cloth, g.e., spines faded to brown with some splitting and minor chipping at ends, corners a little worn; some scattered pale foxing (affecting some plates).