Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 471
Fic. I. No. 19, RICHARDS HERO DOOR HANGER Fic. 2. No. 22, RICHARDS .^UTO DOOR HANGER Screws, stop and floor guides are included with hangers. A full set of hangersweighs 8 pounds; the trolley track 2] pounds per foot. The track can easily be ad-justed or taken down after walls are plastered. The…
Building materials
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