Jonathan Yardley wrote recently in the Washington Post that Lawrence S. Ritter’s 1966 collection of interviews with early 20th-century baseball players, The Glory of Their Times (Harper, 384 pp., $14.95, paperback), “may well be the best baseball book ever.” How can I not have heard about that one until now? I thought it was generally agreed among critics who know more about the sport than I do that “the best baseball book ever” was Roger Kahn’s The Boys of Summer.