BL Labs Flickr Data: Book data and tag history (Dec 2013 - Dec 2014)
Contains the tag information for the 1 million+ images uploaded to the British Library Flickr Commons account.
taghistory.zip - contains a single .tsv file that lists the tags that were added (or removed) from images on the Flickr Common account for the first year. NB There was an issue getting information from Flickr for the first few months, so early information is not available.
book_data.zip - contains a .json file, that holds a list of records, one for each digitised work. The record holds information on the work's title, authors and so on, as well as information on what images on Flickr correspond to it, as well as the identifier required to download PDF version(s) of the entire work.