Bibliography Details

“Questar Vernonscope Eyepiece Canisters / Metal Protective Tubes of 1971.” Company Seven, n.d. http://www.company7.com/library/questar/q1971canisters.html.

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

§ 4.2. New Accessories and Design Refinements

• Citation No. 1

Timeline

• Citation No. 2