Carnegie Library of Pittsburgh - Pittsburgh Iron & Steel Heritage

Marches (Piano), Carnegie Library of Homestead -- Songs and music.

Steel -- Catalogs., Steel -- Welding -- Equipment and supplies -- Catalogs., Carnegie Steel Company -- Catalogs., Trade catalogs. lcgft

Pittsburgh (Pa.) -- Economic conditions., Pittsburgh (Pa.) -- Commerce., Industries -- Pennsylvania -- Pittsburgh., Industries -- Pennsylvania -- Pittsburgh -- Directories., Industries -- Pennsylvania -- Pittsburgh -- History.

Mesta Machine Company -- Catalogs., Rolling-mill machinery -- Catalogs., Metal-working machinery -- Catalogs., Machinery -- Catalogs., Trade catalogs. lcgft

Power transmission -- Catalogs., Rolling-mill machinery -- Catalogs., Rolling-mills -- Equipment and supplies -- Catalogs., Mesta Machine Company -- Catalogs.

Mesta Machine Company -- Catalogs., Machine shops -- Catalogs., Machinery industry -- Catalogs., Metal-working machinery -- Catalogs., Rolling-mill machinery -- Catalogs., Steel-works -- Equipment and supplies -- Catalogs., Trade catalogs. lcgft

Valves -- Catalogs., Fans (Machinery) -- Equipment and supplies -- Catalogs., Mesta Machine Company -- Catalogs., Trade catalogs. lcgft

Metallurgical furnaces -- Catalogs., Annealing of metals -- Equipment and supplies -- Catalogs., Foundries -- Equipment and supplies -- Catalogs., W.S. Rockwell Company -- Catalogs., Trade catalogs. lcgft.