The Migrant Letter Digitised: Visualising Metadata

An article by Emma Moreton and me, The Migrant Letter Digitised: Visualising Metadata, has just been published in the Journal of Cultural Analytics 

http://culturalanalytics.org/2017/03/the-migrant-letter-digitised-visual...

Among other things, it discusses the ups and downs of using letters to study 19th Century emigrants to the USA in a time before walls even became an issue.