John Perry, Spinning Tops & Gyroscopic Motion Dover Publications 1957 Hardcover Good No Jacket Book Usual markings of an ex-library book. Pages yellowed. Rebound library book. The front cover from the original paperback is glued to the front cover.
John Thomas, I Saw Them Making Microscopes American Optical Company 1947 Soft cover Very Good Book An illustrated description of a conducted trip through a modern scientific instrument plant.