Alexander Walker (1869-1929) trained at the Glasgow Athenaeum. His subsequent career included teaching at the Glasgow School of Art and designing for the Stephen Adam Studio and Guthrie & Wells, amongst others. In the late 1920s he moved to Orkney, where he supervised and designed many of the new windows being installed in St Magnus Cathedral by Oscar Paterson.
Scotland’s Stained Glass: Making the colours sing by Michael Donnelly (Historic Scotland, 1997)
Orchestrations of Colour – The stained glass of Douglas Hamilton by Jeff Hopewell (The Coplow Press, 2020)