Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,372 pages of information and 233,518 images on early companies, their products and the people who designed and built them.
1850 Slater's Directory of Manchester & Salford, 1850 lists William Crossley, iron and brass founder, engineer and millwright, Alum Street Iron Works, 33 Alum Street, Ancoats: House 28 Mill Street. Adshead's 1851 Maps of Manchester, Map 14, shows the premises, identified as belonging to W Crossley. Area approx 2000 sq yds. Located alongside the Rochdale Canal and bounded by the canal, Allum Street, Cotton Street and Albion Buildings. Also shown on the 1849 O.S. map as Allum Street Foundry (Engineer and Mill Work) 
Note: No known connection with William John Crossley