Vintage Dental Literature - The Andrews Bridge System (2 pcs) c. 1960's

Description

A nice set of vintage dental literature for the Andrews Bridge System. Consists of:
1) Booklet titled "The Andrews Bridge System: A Complete System of Restorative Dentistry". Measures approx. 5-1/2 ins. x 8-1/2 ins. with 16 pages (incl. covers) in paper covers. Has some light scuffs on lower edge front cover else clean, tight and unmarked.
2) Booklet titled "The Andrews Bridge System: Metallurgist Report". Measures approx. 5-1/2 ins. x 8-1/2 ins. and opens to three panels as shown. Lightly bumped upper corner else clean and unmarked.
No dates or publisher information noted but both items are probably c. 1960's. Questions gladly answered.