Illinois Society of Architects · Chicago · leaf 325
stacks are placed in the basement, connected tomain supply and return pipes and encased with either galvanized iron, or narrow ceilinglined with tin. The cold air is introduced through air ducts from the outside, and afterbeing warmed by contact with the indirect heating surfaces, is introduced…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.