Cartographies of Time: A Visual History of the Timeline
Today's trend to visualise data goes a long way back, as this book shows. "Graphic representation is among our most important tools for organizing information" Cartographies of Time: A History of the Timeline by Daniel Rosenberg and Anthony Grafton
I do not think Suzanne should write a fourth book in the 'THG' series. I think it's good where it was left off. Though, it would be interesting if there was a fourth book of short stories. By example, a short story written in the pov of haymitch when he was in the games. Or the story of Mags when she witnessed the war before 'THG' we're created. Something like that would be great to read.