More Comments from Dr. Sprei

1 Page Vertical

Questar advertisement, <em>Sky and Telescope</em>, March 1986 — Questar advertisement, *Sky and Telescope*, March 1986. Questar Corporation

Sky and Telescope, July 1985, IFC.
Sky and Telescope, March 1986, IFC.
Sky and Telescope, June 1986, IFC.
Sky and Telescope, October 1986, IFC.
Sky and Telescope, January 1987, IFC.
Sky and Telescope, April 1987, IFC.
Sky and Telescope, April 1988, IFC.

2/3rds Page Vertical

Questar advertisement, <em>Scientific American</em>, July 1986 — Questar advertisement, *Scientific American*, July 1986. Questar Corporation

Scientific American, July 1986, 111.
Scientific American, September 1986, 83.
Scientific American, March 1987, 111.
Scientific American, July 1987, 31.
Scientific American, February 1988, 110.