Illinois Society of Architects · Chicago · leaf 239
lex Cement Flashing Block. Patent issued Sept. 24, 1912. Canadian. March 18. 1913. The Block D is to be buill in the fire walls and chimneys. It replaces two courses of bricks. As the usefulness will be impaired if notproperly laid, caie must be taken to put Base A flush with top of concrete orroof… … Duplex Flashing Block
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
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