Image Rare Books Chronology of chemistry in the Lehigh Valley. Chronology of chemistry in the Lehigh Valley / R.D. Billinger, [typescript], 1969. 501 leaves ; 28 cm. View Item
Image Rare Books Coal Mining Made Easy, Safe, and Healthy : With Plans, Sketches, Plates Contains 42 chromolithograph plates (of which seven are double-page or folding) View Item