My favorite sort of find. Donna Gasiorek attended the Cabrillo College School of Dental Hygiene in 1970, and for a course in dental anatomy, I'd guess perhaps as her final project, she completed this excellent series of tooth drawings, kept safe for posterity inside the  sheet protectors of a three ring binder. 8 drawings, 32 teeth! Her handwritten headers at the top of the page are very 1970, but her drawings of teeth are really wonderfully done, complete with shadows--making me think of antique watercolor studies of plants and birds and butterflies....but really how to beat teeth?! I'd be very inclined to frame the lot of them and hang in a grid. (Easy to mat obfuscating binder holes at left and headers if desired, too.)

Binder: 11 1/2" x 9 1/2"; Drawings: 11" x 8 5/8", graphite on paper.  8 full page drawings (blank backs) plus one handwritten chart and one yellow photocopy sheet detailing class assignment. All placed in sheet protectors in spiral ring binder, and all in good condition.