Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,138 pages of information and 233,680 images on early companies, their products and the people who designed and built them.
P. and J. McGregor of Falcon Works, Poland Street, Manchester.
1850 Listed in Slater's 1850 Directory as Peter & James M’Gregor, machine makers, Falcon Works, Poland Street, Oldham Road, Manchester. The 1849 O.S. map  shows the 'Falcon Works (Iron)' located behind the White Lion on Poland Street. The eastern end of the factory was immediately adjacent to a branch of the Rochdale Canal. The main building was approx 145 ft by 45 ft.
1853 Self-acting mule for cotton.
1875 Liquidation? of the business of Peter and James McGregor as machine makers of Falcon Works, Poland Street, and as iron founders of Pott Street, Ancoats