1. Pyrex.

Pyrex Laboratory And Scientific Glassware.

Sunderland, James A. Jobling & Co. Ltd., 1950. 15 x 24 cm. 64 pages with illustrations. Original illustrated softcover. Very good condition with only minor signs of external wear. Company stamp of Thomas H. Mason & Sons, Ltd, in Dublin – on frontcover.

2. [Alteneder, Theodore].

Alteneder Drawing Instruments, Drafting Scales, Stainless Steel T-Squares, Stainless Steel Triangles, Stainless Steel Straightedges.

Philadelphia, Theo. Altender & Sons, 1954. 8°. 38 pages. Original Softcover. Very good condition with only minor signs of external wear.