William A Hay & Denys P Leighton 
Lives of Victorian Political Figures, Part IV Vol 1 [PDF ebook] 
John Stuart Mill, Thomas Hill Green, William Morris and Walter Bagehot by their Contemporaries

First published in 2009, this is a collection of carefully selected extracts from biographies, memoirs, diaries, private letters and other ephemera reveal how these key nineteenth-century figures were viewed by their contemporaries. Volume 1 covers John Stuart Mill.