Operating from 61 Jane Street, 1892-1930, and 373 West Regent Street, 1930-62, the firm became a Limited Company in 1929, and outlasted many of their rivals until 1963.

As architectural sculptors, they were particularly active at the turn of the 19th Century, producing carving and sculpture for a number of important Glasgow architects, such as J J Burnet , C R Mackintosh and James Miller , and often worked from models by other sculptors including Phyllis Archibald and Joseph Armitage .

For C R Mackintosh and Honeyman & Keppie, they executed the carver work at Queen's Cross Church (1899); a Chimneypiece at Broughton House, Kirkcudbright, for artist E.A. Hornel (1908); the Robert M Mann Memorial, Busby (1910) and the Gate-Posts and Sundial at Dineiddwg, Milngavie (1912).

Their best known work for C R Mackintosh is the figurative Tree of Knowledge relief above the entrance to Glasgow School of Art (1899).

For J J Burnet , they executed the sculpture and carver-work on McGeoch's Warehouse, 28 West Campbell Street, from Phyllis Archibald 's models, including full-length, reclining statues of Industry and Science. and an angel representing Art (1905-6, dem. 1971).

They also executed the armorial group and associated carvings on Burnet's Elder Library, 228a Langlands Road, Govan (1901-3).

After world War I, they executed Lenzie UF Church War Memorial (1920); the carver work on the Bank of Scotland, Glasgow Cross (1925); and on James Miller 's Union Bank of Scotland, 110-20 St Vincent Street (1924-7).

Amongst the many other buildings they worked on are:

The Parcels Office, Waterloo Street (1903-5); the North of Scotland Bank, 63-5 St. Vincent Street, for Launcelot Ross (1926-8); and Govan Parish Church, where they carved the inscriptions (1926).

With architectural carving redundant by the 1950s, they relied on contracts such as the plaster and roughcasting at Greenfield Primary School (1951).

Both John Holmes and Mathew Jackson trained at GSA, and exhibited portraits and genre works concurrently with their commercial activities, 1890-1928.

Jackson's son operated his own firm of carvers as Mathew Jackson & Co., 44 Jane Street, 1924-c.45.

Mathew Jackson's most important monument is the memorial to the World War II air ace, Squadron Leader Archie McKeller, in Eastwood New Cemetery, Thornliebank, Glasgow (1940-1).

Sources:

• Honeyman & Keppie Job Books 1899-1963
• POD 1892-1963
• A , vol 44, 16 January, 1934
• Billcliffe , vol 2
• McKenzie (1999)
• McKenzie (2002)