(Home Appliances) Water Heater Advertising Covers. Balance of 23 illustrated ad covers, 1870-90's; host of heater designs with products and companies including Wm. H. Page Boiler Co. allover, Gurney Hot Water Heater Co. - Boston, Mass (3 different), Bolton Hot Water Heat - Detroit, Mich. (2 in colors), etc.; some flaws, Very Fine overall. Estimate  $200 - 300. $0 (Image)