Steven Carl Walske is an American philatelist and philatelic writer. He was appointed to the Roll of Distinguished Philatelists in 2017."Roll of Distinguished Philatelists", Jon Aitchison, The London Philatelist, Vol. 126, No. 1445 (May 2017), pp. 194-195.

He once owned the unique block of four of the 1869 24c stamps of the United States with an inverted center.24¢ Green & Violet, Center Inverted. Robert A. Siegel Auction Galleries. Retrieved 18 February 2019.United States Stamp Treasures: The William H. Gross Collection. Robert A. Siegel Auction Galleries, New York, 2018. pp. 196-201. Archived here.

Selected publications The Pony Express: A postal history. Philatelic Foundation, New York, 2005. (With Richard C. Frajola & George J. Kramer) Special mail routes of the American Civil War: A guide to across-the-lines postal history. Confederate Stamp Alliance, United States, 2008. (With Scott R. Trepel) Mails of the westward expansion: 1803 to 1861. Western Cover Society, United States, 2015. (With Richard C. Frajola)

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