Resources – J,K,L
J. Casartelli and Son – Manchester
J.H.Steward Ltd. – Opticians and instrument makers, London
J.J. Mechi – 4 Leadenhall Street, London
J.P. Cutts – Sheffield and London
James Dixon & Sons – Silversmiths, Sheffield
John Carter – 6A Cavendish St. London
John Taylor and Son – Edinburgh
Johnstone & Jeanes – 67 New Bond Street, London
Joseph Halden & Co of Manchester
Lawson (Matthew) – Ayr, Scotland