Steam Boilers of the World
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Harrison Boiler Works, Philadelphia, 1869, USA. Advertisement (Union Pacific Railroad illustrations, SMU Central University Libraries). No known copyright restrictions (public domain)
Abbott & Co., Newark-on-Trent, 1880, England (UK). Standard Size Vertical Boilers ad, trade press via Grace's Guide. Public domain
Abbott & Co., Newark-on-Trent, 1888, England (UK). Torpedo, Launch, Lancashire/Cornish and Vertical Boilers ad, trade press via Grace's Guide. Public domain
Abbott & Co. (Newark) Ltd, 1899, England (UK). High-Pressure Boat Boilers ad, trade press via Grace's Guide. Public domain
Hartford Steam Boiler Inspection and Insurance Co., 1900, USA. Official Souvenir and Program, Soldiers' Monument dedication, New Britain, Conn. (Internet Archive). Public domain
Babcock & Wilcox Ltd (London; works Renfrew, Scotland), 1923, UK. Brassey's Naval Annual 1923. Public domain
Moran Bros. Company, Seattle, 1900, USA. Early Advertising of the West collection, University of Washington Libraries. Public domain
