Inside Out Library
Journal (1917)
Society of Glass Technology · [Sheffield] · leaf 147
F,G 1 _The Ottawa Silica Company-s Work, and Sand-quarry■ ■ Ottawa, Illinois. [Toface p. 72. … Ci^ n 2-Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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