Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 199
Fig. 2. TYPE H. UNIT GIRDER FRAME, USUAL WIDTHMade for a long span, with heavy loads where headroom is limited(Patented) TTic -^-ri*>.F -B,a^Fa.S-oF--Gi **OE.F^-r«.-^ME … , t I> -4, ^ fA..-! --c^
Building materials
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
