The Isabella Furnace at Etna, near Pittsburgh, Pennsylvania, built 1872 [electronic resource] : a brief history and technical description prepared by Charles T.G. Looney
Title from PDF file (viewed on December 17, 2010). "On the occasion of the Third Annual Conference of the Society for Industrial Archeology held at Pittsburgh 26th-28th April 1974, by way of documenting the conference poster, designed by Klaus Grutzka, which features this legendary late 19th century blast furnace."
Technical Details:
Mode of access: World Wide Web. System requirements: Adobe Acrobat Reader.