Hargreaves, J. & Co
Englische Uhrmacher
Literatur
The London Wholesale, Manufacturing and Retail Goldsmiths, Silversmiths, Jewellers, Watchmakers, Opticians and Cutlers Directory 1861, 1996 Facsimile pub J Wadson. ISBN 0-9528034-0-2
Englische Uhrmacher
The London Wholesale, Manufacturing and Retail Goldsmiths, Silversmiths, Jewellers, Watchmakers, Opticians and Cutlers Directory 1861, 1996 Facsimile pub J Wadson. ISBN 0-9528034-0-2