Bibliography Details

Perkins, Jim. Email message to author, September 4, 2020.

The following is a complete listing of all citations using this source:

§ 2.1. Characteristics of Early Questar Telescopes

• Citation No. 1

§ 4.2. New Accessories and Design Refinements

• Citation No. 2

The Changing Finish of Questar’s Star Map Dew Shield, Moon Map, and Other Navigation Aids

• Citation No. 3
• Citation No. 4
• Citation No. 5