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PLAINTIFF'S EXHIBIT UNITED STATES GYPSUM COMPANY SALES POLICY FOR ASPHALT ROOFING PRODUCTS EFFECTIVE NOVEMBER 20, 1933 HISTORICAL FILE ..........

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A NEW SUNBEAM CATALOGUE American .rTLHEATING EOD1PMENT COSTS NO MORE THAN OTHERS In this new loose-leaf catalogue will be found complete and detailed information on the Sunbeam Line of Furnaces, Blower Filter Units, Air Conditioners, Blowers, Motors, Filters, Humidifiers and Controls.

Simple Devices For Plant Safety These five shop-designed and shop-made safety gadgets ore simp/e, effective, easily dupli cated.

More FREE BULLETINS ----------- -----*' -. |,, The Accelator combines --In o single unit -- mixing, coagulation and solids separation.

American Society of Heating and Ventilating Engineers Guide, 1932 Steel Boilers Steel heating boilers may be classified as (1) horizontal return tubular (H.R.T.) boilers, (2) portable (self contained) firebox boilers with either water tubes or fire tubes and (3) water-tube boilers of the power type.

American Society of Heating and Ventilating Engineers Guide, 1932 Overfeed Inclined Grate Stokers In general the combustion principle is similar to the flat grate stoker, but this stoker is provided with rocking grates set on an incline to advance the fuel during combustion.

American Society of Heating and Ventilating Engineers Guide, 1932 Table 5.

American Society of Heating and Ventilating Engineers Guide, 1934 conditions maintained in the room must be provided by the tempering coils, preheater coils and reheater coils.

American Society of Heating and Ventilating Engineers Guide, 1934 mined, as can also the required air temperature for the corresponding convective effect.

American Society 0/ Heating and Ventilating Engineers Guide, 1935 ........