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It wasn’t until Sen. Barry Goldwater of Arizona won the GOP presidential nomination in 1964 that the conservatives regained control of the party and that proved only temporary until former California Gov. Ronald Reagan was nominated and won in 1980.

Mr. Busch’s points are well taken. However, his dry prose and tendency to get bogged down in minutiae may make it unlikely that his audience will expand much beyond hard-core political aficionados. Those who do read “Truman’s Triumphs: The 1948 Election and the Making of Postwar America” will most likely come away thinking that their time has been well-spent.

• Claude R. Marx, an award-winning journalist, is writing a biography of William Howard Taft.