OVATION MODEL 1989-8 ACOUSTIC/ELECTRIC COMPOSITE CURVED BACK GUITAR, SERIAL NUMBER 509,
File:Nancy Wilson (Heart)'s 1978 Ovation Adamas 1687-7 (serial no. 477-92) specially made for her - Play It Loud. MET (2019-05-13 19.31.01 by Eden, Janine and Jim) - zoomed 200%, natural color, force front.jpg - Wikimedia Commons
Ovation Guitars Price Guide - From Budget to Premium
The History of the Ovation Guitar: Walter Carter, Jon Eiche: 9780793558766: Amazon.com: Books