From Pittsburgh Streets
|Origin of name||Karl Watson Warmcastle|
Karl Street appears in the 1904 Hopkins atlas. It was laid out as part of the "Nimick Terrace Plan" by Samuel D. Warmcastle. The street is named for Warmcastle's son, Karl Watson Warmcastle (1883–1945).
- Real Estate Plat-Book of the City of Pittsburgh, vol. 2, plate 20. G. M. Hopkins & Co., Philadelphia, 1904. view source] hopkins-1904-vol-2 ; included in the 1903–1906 layer at Pittsburgh Historic Maps ( ). [
- Atlas of Greater Pittsburgh, plate 20. G. M. Hopkins & Co., Philadelphia, 1910. view source] hopkins-1910 ; 1910 layer at Pittsburgh Historic Maps ( ). [
- History of Pittsburgh and Environs, [vol. 5?] (biographical), p. 151. American Historical Society, New York and Chicago, 1922. Google Books IdAwAQAAMAAJ, iGROWogZLRkC, VP9HAQAAMAAJ; HathiTrust 011262563; Internet Archive historyofpittsbu05inflem, historypittsbur00compgoog. [view source] history-pgh-environs-5
- "Obituaries: Attorney dies at home in Ellsworth Ave.: K. W. Warmcastle admitted to bar in 1908." Pittsburgh Press, July 11, 1945, p. 19. Newspapers.com 147867683. [view source] karl-warmcastle-obit