Named for Captain (or Major) Thomas Smallman, trader and member of the garrison at Fort Pitt.[1, 3, 4, 5] He was one of the original six justices of the peace in the first courts held in Pittsburgh in 1775, at that time part of Westmoreland County and claimed by Virginia.
History of Allegheny County Pennsylvania: Including its early settlement and progress to the present time; a description of its historic and interesting localities; its cities, towns and villages; religious, educational, social and military history; mining, manufacturing and commercial interests; improvements, resources, statistics, etc.: Also portraits of some of its prominent men, and biographies of many of its representative citizens. A. Warner & Co., Chicago, 1889, p. 481. Internet Archive historyofalleghe1889cush.
Miller, Annie Clark. Early Land Marks and Names of Old Pittsburgh: An address delivered before the Pittsburgh Chapter Daughters of the American Revolution at Carnegie Institute, Nov. 30, 1923. Pittsburgh Chapter Daughters of the American Revolution, 1924, p. 27. Historic Pittsburgh 00awn8211m; Internet Archive earlylandmarksna00mill.
Regan, Bob. The Names of Pittsburgh: How the city, neighborhoods, streets, parks and more got their names. The Local History Company, Pittsburgh, 2009, p. 73. ISBN 978-0-9770429-7-5.
“Street names sketch history of city: Tribute to many pioneers dimmed by time.” Pittsburgh Post-Gazette, Sept. 26, 1936, anniversary section IV, p. 16. Newspapers.com 88921069.