It has taken nearly a decade to research and write, and runs to more than 750 pages. But The History Makers, described as "an epic exploration of those who write about the past", has itself been rewritten after its author failed to take into account enough black historians, academics and writers.
Richard Cohen was told by his publisher to produce new chapters and expand others after failing to sufficiently acknowledge the roles of black people and African Americans.
"It was to do with the publisher's sensitivities," says Cohen, who previously wrote the highly praised Chasing The Sun and How to Write Like Tolstoy. "I was then asked to write more, and have done about another 18,000 words."