The Bartholomew Archive at the National Library of Scotland contains the business records, publications, working maps and printing plates of John Bartholomew & Son Ltd., the Edinburgh mapmaking firm. The Archive is still a work in progress: the Library is still receiving papers from the family of John Bartholomew, who died last year. The Bartholomew Archive blog is working its way through the collection. Via Collins Maps Blog.

Previously: John Bartholomew; More About John Bartholomew.