That Caesar book is in the same series as the Othello one I saw. Although I guess that the appeal of Horrible Histories shows that children - some children, anyway - love history when it's full of gore and violence and crucified pirates.

And now I'm happily wallowing in nostalgia for the Ladybird Books of yore. I definitely had one about Julius Caesar and Roman Britain, full of clean-cut young Romans with clean, shiny knees.