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Greater Penobscot Building, 561 1/2 feet high, 47 floors, is completely equipped with Johnson Heat & Humidity Control. On the second to the fifth floors, inclusive, (occupied by the Guardian-Detroit Bank and the Guardian Trust Company), Johnson regulation is on the direct radiation and the air conditioning. The sixth to the forty-seventh floors, inclusive, (devoted to miscellaneous offices) have Remote control to the river valves, divided into thirty-six zones -- so that steam may be supplied to or shut off from any zone desired. This is an example of the various applications of Johnson Heat & Humidity Control, and another impressive reference endorsing Johnson leadership. 
JOHNSON SERVICE CO.....MILWAUKEE, WIS. 
ESTABLISHED IN 1885 
Branches In All Principal Cities
Interesting Johnson Catalog Sent On Request
JOHNSON HEAT & HUMIDITY CONTROL
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