Apr. 20-21 (1956)a Virginiaa Annual convention of the Virginia Associated Plumbing aamp; Heating Contractors; Hotel John ... Catalog contains diagrams of heating and cooling systems and wiring diagrams cf heating and cooling panels. ... Forty- eight-page catalog gives a two- color presentation of plumbing fixtures and fittings for medical in- K O H L E R stitutions. ... A three page section, devoted to the firma#39;s electric plants, includes data on units generating from one to 35 kilowatts.