PLENCK, Joseph Jacob von (1738-1807). Elementa artis Obstetriciae, Vienna: R. Graeffer, 1781, 8°, engraved title vignette, 2 folding engraved plates (stamped on verso, A2 perforated, minor dust-soiling to title), library cloth, t.e.g. [Blake p.356; Waller 7527] Provenance: JCL (Senn Collection) -- Astley COOPER (1768-1841). The Anatomy and Diseases of the Breast, Philadelphia: Lea & Blanchard, 1845, 8°, 36 lithographed plates (perforation stamp on title, spotted), contemporary sheep (rubbed). (2)