San Francisco : Architect and Engineer, Inc · leaf 367
erving the traffic needs ofthe communities it links together. The calendar picture is about six timesthe size of the engraving shown above. Itis printed in warm sepia and for sheerbeauty it would be difficult to duplicate.Extra prints are available for framing. Exclusive rights to this copyrighted… … NRA. Whether the control of the unit ventilatoris accomplished by the operation of mix-ing dampers, one or more valves on thesteam supply, fresh and return air damp-ers, or a combination of all of them, thereare Johnson gradual acting thermostats,diaphragm valves, damper motors, andair-stream…
Architecture · Building
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