A Letter to Questar on Performance

Questar on Red Background

1 Page Vertical

Questar advertisement, <em>Sky and Telescope</em>, October 1975 — Questar advertisement, *Sky and Telescope*, October 1975. Questar Corporation

Sky and Telescope, June 1975, IFC.
Sky and Telescope, October 1975, IFC.
Sky and Telescope, March 1976, IFC.

M81

1/3rd Page Vertical

Questar advertisement, <em>Natural History</em>, August-September 1975 — Questar advertisement, *Natural History*, August-September 1975. Questar Corporation via archive.org

Natural History, August-September 1975, 28.
Natural History, December 1975, 92.

M8

2/3rds Page Vertical

Questar advertisement, <em>Scientific American</em>, April 1976 — Questar advertisement, *Scientific American*, April 1976. Questar Corporation via jstor.org

Scientific American, August 1975, 121.
Scientific American, September 1975, 202.
Scientific American, April 1976, 23.
MIT Technology Review, June 1976, 3.