Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 472
own afterthe walls are plastered. The No. 122 Richards Royal Ball-Bearing Trolley House Door Hanger (Fig 3)is perfectly noiseless. The wheels run on hard maple adjustment in the hanger andtrack. The track can easily be taken down after the walls are plastered. Four sets of balls in each hanger,…
Building materials
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
