The Metal Worker.
New York & Chicago.
July 3rd 1897
Heating &
Ventilating
Contractors Association
1979
75th
Anniversary
Issue
Heating /
Piping / Air Conditioning
Engineering
September
2003 - 75th
Anniversary
Issue
HVCA
The first 100 years
Supplement to Heating and Ventilating Review
2004
JANUARY 2005