The National Library of Scotland just keeps on giving!
The latest additions to their scanned maps has now been uploaded:
https://maps.nls.uk/geological/6inch/ https://maps.nls.uk/geological/one-inch/ The 6" inch to a mile drawings are particularly interesting for anyone interested in Scottish Mining. Inevitably the majority are focussed on the coalfields but there is some coverage of Leadhills/Wanlockhead. The 1" to mile sheets mirror mostly those already available on OpenGeoscience