JOE DIMAGGIO: AN INFORMAL BIOGRAPHY by George De Gregorio (former sportswriter for the New Haven Register and Hartford Courant newspapers) focuses primarily on The Yankee Clipper's baseball career. The book opens with DiMaggio's 56 game hitting streak (in 1941), then flashes back to a synopsis of his childhood. The rest is baseball: two years with the San Francisco Seals, followed by a recap of 13 stellar major league seasons. There's little mention of Joe's two marriages to actresses Dorothy Arnold and Marilyn Monroe-- in fact more details can be gleaned on DiMaggio's male friendships (with Toots Shor and others) than his home life.
Joe's amazing 1936 through '41 seasons are early-on marred by salary disputes, holdouts and fan hostility. The three prime years lost to WWII and his wartime activities are covered perfunctorily. DiMaggio's sports career resumes in 1946. He overcomes mounting postwar injuries with courageous willpower, and then the narrative screeches to a halt. Nothing is said about Joe's later associations with the Yankees or Charlie Finley's Oakland A's. Also, no mention of savings bank or coffeemaker commercials or his efforts on behalf of a South Florida children's hospital. The story ends as it began: on a salient point of DiMaggio's Yankee career, in this case, his highly-publicized retirement.
As baseball books go, this one's a pleasant read and a straightforward recounting of the on-field exploits of a legendary ballplayer. If however you're interested in a more in-depth bio of Joseph Paul DiMaggio (that includes an examination of the Joltin' Joe myth), try JOE DIMAGGIO: THE HERO'S LIFE, by Richard Ben Cramer.