ScotlandsPeople, the ancestry research service of the National Library of Scotland, have added over 4,000 post-war agricultural planning maps and +400 heritors’ plans
The Department of Agriculture for Scotland plans of farm boundaries and types of farming are a snapshot of Scotland from 1944-54, showing land used for farming, hill grazing, market gardening, forestry and more. The plans were created to help safeguard food production during and after World War II.
The new heritor's plans now available mostly show architectural drawings of churches and manses around Scotland.
Read the main article here 
https://blog.nrscotland.gov.uk/2021/11/19/archives-online-maps-and-plans/
https://blog.nrscotland.gov.uk/2021/11/19/archives-online-maps-and-plans/