From the 1889 Wyoming Business Directory

Source: the Mercantile Agency Reference Book, Vol. 85

R.G. Dun & Co., New York , July 1889, NS

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Converse County Herald, December 27, 1900

"Anything you want, J.J. Steffen Drug Co."

"Xmas cards, New Year cards, J.J. Steffen Drug Co."

"Come early, Goods are going fast. J.J. Steffen Drug Co."