Times Square, then Long Acre Square. Photo from Library of Congress, circa 1898-1900. We’ve been doing a bit of research about Times Square these days, in a forthcoming book about the history of Broadway that we’re working on. The Library of Congress has as great repository of vintage photographs and we’d thought we’d share the striking evolution of Times Square from 1898 to today. Times Square had its humble beginnings as Long Acre Square prior to 1904. The Astors owned much of the land…