Keep the red flag flying

One of my favourite libraries is the Working Class Movement Library, based in Salford, which has some great on-line resources. There are milestones in the history of employment rights and trade unions, many of which, of course, feature official publications. It's got a blog, too.
What I love about the library is that it's developed from the personal collection of Ruth and Eddie Frow, both avid book collectors, who devoted their lives to the labour movement.