Ian found this at the National Library of Scotland
Victorian town plans top satellite views

List of town plans with overlays
The latest feature in their online maps series makes it easy to contrast Victorian Scottish town plans with modern satellite images.
Using image overlays, users can switch between Google Maps, Virtual Earth satellite and map layers and Ordnance Survey plans.
The 62 large-scale town plans are the earliest and most detailed OS mapping ever published. In total there are 1,900 sheets produced from a survey between 1847 and 1895. We have accurately positioned them to create a seamless layer on top of the satellite and maps layer.
Users can also search the OS large scale town plans using a zoomable map and a street gazetteer and by National Grid Reference.
This is Edinburgh College of Art with the cattle market.