This is an excerpt of the Beacon Boiler Reference Book, Sixth Edition and includes ratings for boilers made prior to 1959. This section contains pages 204 through 223 and includes ratings for these manufacturers: Sears Roebuck and Co., Seattle Boiler Works, Seevers Mfg. Co., Seidelhuber Iron & Bronze Works, Inc., Selectrol Engineering Co., Seltzer & Co., Scharp & Van Fleet Mfg. Co., Shephard Heater Co. Inc., Shirley Radiator & Foundry Co., Silent Glow Oil Burner Corp., Smith Corp. A.O., Smith Co. Inc., The H.B., Smith & Anthony Co., Smith & Thayer Co., Smith Twin Tubular Boiler Co., Inc., Spencer Hater - Lycoming Div. AVCO, Standard Arcoil Corp., Standard Heater & Oil Equipment Co., Standard-Yne Burner Corp., Stewart Warner Corp., Stokol Stoker Co., Surface Combustion Corp., Syncro-Flame Burner Corp., and Temp-Rite Corp.