Hi there
In James Miller's book "Inverness" (pub Birlinn 2004) there's not a lot of information on the Holm Mills apart from the owner of Holm Mills (James Pringle Ltd) bought the only other woollen mill in Inverness (situated at Muirtown in Inverness) in 1937 and transferred its work to Holm. However, Miller does quote a reference, namely:
MacAskill, EHL, "Holm Woolen Mills 1798 - 1984" Scottish Industrial History (1984) 7.2: 36-44
Also in Gerald Pollitt's "Historic Inverness" (pub Melven Press 1981) he says that the mill was established about 1798. The Provost of Inverness Dr John Inglis Nicol owned the mill in the early 1800s. Pollitt gives some more information on the mill, based on the following references:
Groome, Francis H, editor Ordnance Gazetteer of Scotland , a survey of Scottish Topography, Statistical, Biographical and Historical (1883), vol 4
Barron, James, Northern Highlands in the Nineteenth Century, (Carruthers and Sons, Inverness) in three volumes 1903 to 1913 1.87, 3.154
Hope this info is of some help. If you're in Scotland, perhaps these publications may be available (or can be ordered) at your local library?
Many thanks
Lynn