Questar Writes to a Potential Customer

1 Page Vertical

Questar advertisement, <em>Sky and Telescope</em>, February 1980 — Questar advertisement, *Sky and Telescope*, February 1980. Questar Corporation via archive.org

Sky and Telescope, February 1980, IFC.
Sky and Telescope, March 1980, IFC.
Astronomy, April 1980, 71.
Astronomy, May 1980, 55.
Sky and Telescope, June 1980, IFC.
Sky and Telescope, July 1980, IFC.
Astronomy, September 1980, 77.
Sky and Telescope, November 1980, IFC.

2/3rds Page Vertical

Questar advertisement, <em>Scientific American</em>, March 1980 — Questar advertisement, *Scientific American*, March 1980. Questar Corporation via jstor.org

Scientific American, March 1980, 182.
Scientific American, April 1980, 30.
Scientific American, August 1980, 82B.
Scientific American, December 1980, 154.