What Ifs? of American History, subtitled Eminent Historians Imagine What Might Have Been, is a collection of seventeen essays dealing with counterfactual history regarding the United States. It was published by G.P. Putnam's Sons in 2003, ISBN 0-399-15091-9, and this book as well as its two predecessors, What If? and What If? 2, were edited by Robert Cowley. Source: Wikipedia (en)