Donald Clerk & Sons
Suppliers of steel work and fireproof doors

Donald Clerk & Son (sometimes, incorrectly, given as 'Clark') was a firm of 'iron roof and bridge builders' which was incoroporated in 1901, with partners Dugald Clerk, structural engineer, and James Clerk, smith. 1 They also advertised as galvanizers and makers of iron doors. 2 From around 1887 they were based at 92 Wellington Street, Glasgow but seem to have had several different works premises in the East End; from around 1904 they were at Mackinfauld Road, Tollcross. 3
Among their contracts was work at Dawsholm Gas Works and Temple Station stables, both for Glasgow Corporation in 1893–4; gates for the Royal Observatory, Edinburgh (1896), and structural steelwork at Grangemouth oil terminal in 1930. 4 The firm later became a steel-erecting subsidiary of A. G. McFadden of Caledonian Steel Works, Rutherglen, and ceased trading in 1967. 5

Notes:
1: Scotsman, 28 September 1901, p. 6.
2: Glasgow Post Office Directory, 1909–10, p. 1246.
3: Glasgow Post Office Directory, 1886–7; 1887–8; 1901–2; 1902–3; 1911–12; National Telephone Company's Directory, 1904–5, London: McCorquodale, July 1904, p. 59, www.ancestry.co.uk [accessed 15 September 2011].
4: National Archives of Scotland, GB1/92/65; RHP141623; Glasgow Herald, 15 October 1930, p. 15.
5: Glasgow Herald, 8 July 1959, p. 4; Edinburgh Gazette, 24 October 1967, p. 853; 26 April 1968, p. 365; 30 November 1976, p. 1613.