James Henry Steward founded his instrument company, J H Steward, in London in 1852.  In February 1913 the company was incorporated as J H Steward Limited.  The company went out of business in 1975.  A history of the J H Steward Company may be found here.

The New Catalog of Meteorological Instruments from J H Steward, published in 1885, may be downloaded below (35 pages):

An  1899 catalog of meteorological instruments from J H Steward may be found below (78 pages):

An undated catalog, perhaps from the 1930s, from J H Steward Ltd showing their meteorological instruments may be downloaded below (40 pages):