Here are some of the 'Thomas Muir' books available- I think there are more, please add if you know of any? (I've read some but not all of these!)
There are display panels and a bust of him in Bishopbriggs Library and a replica in The Museum of Australian Democracy in Canberra.
Also various etchings/paintings of him - alas I think all based on his appearance after the horrific facial injuries he sustained while endeavouring to return to Europe after escaping from Australia.

2016 Thomas Muir of Huntershill Essays for the Twenty First Century
      (Friends of Thomas Muir) paperback ISBN 978-1-84622-051-7

2014 The Liberty Tree / Murray Armstrong ISBN 978-0-9927392-2-5

2012 The Democrat/Olly Wyatt historical novel ISBN978-0-9573918-0-2

2015 A Handful of Rogues / Hector MacMillan ISBN1902831896

1981 Muir of Huntershill / C Bewley

1976 History is my Witness / editor G. Menzies

1975 Thomas Muir of Huntershill 1765-99/ M. Donnelly

1969 The Scottish Martyrs / F. Clune

1912 Scotland and the French Revolution / H. Meikle