Forbes .com is reporting that Ambrose’s “Crazy Horse and Custer” contains sections similar to Jay Monaghan’s “Custer.” A spokesperson for Ambrose on Tuesday declined to comment.

Monaghan, who died in 1980, is among the authors singled out in the Crazy Horse and Custer "Acknowledgments" note, in which Ambrose mentions his "debt to those whose labors made my work possible." ...

Tuesday, Forbes magazine's Web site, Forbes.com, reported that Ambrose's "Crazy Horse and Custer" contains similarly duplicative passages to Jay Monaghan's "Custer." What's going on here?

1: “Jefferson the Virginian,” p. 46). In addition, as reported by Forbes: -Ambrose’s 1975 “Crazy Horse and Custer” lifted passages from Jay Monaghan’s 1959 “Custer: The Life of ...