Inside Out Library
Handbook for architects and builders (1898)
Illinois Society of Architects · Chicago · leaf 642
C-Fig. 1.Wade Accessible flushing backwatervalve for prevention of floodedcellars. … C-Fig. 18.Floor drain and bacViwater valve.Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
More pictures from Handbook for architects and builders
More like this
