Loose leaf binder full of cosmetic dentistry photos, transparent overlays and related advertising and sales material.
This is labeled Dentogenic Restorations and Dynesthetics. The title page is -A Study of the Dentogenic Concept of Dental Esthetics and Dynesthetics- by John Frush. It is dated 1957.
This has about 50 pages with illustrations and Swissedent advertising including about 9 7.5" x 9" black and white photos of smiling men and women with transparent overlays that show the problem with their teeth.
These are from the estate of a dentist who ran his own practice for many years.