Alexandra Alter, "Reagan Book Sets Off Debate", NYT 8/4/2014:
Mr. Perlstein’s new 856-page book, “The Invisible Bridge: The Fall of Nixon and the Rise of Reagan,” which comes out Tuesday, is proving to be almost as divisive as Reagan himself. It has drawn both strong reviews from prominent book critics, and sharp criticism from some scholars and commentators who accuse Mr. Perlstein of sloppy scholarship, improper attribution and plagiarism.
The most serious accusations come from a fellow Reagan historian, Craig Shirley, who said that Mr. Perlstein plagiarized several passages from Mr. Shirley’s 2004 book, “Reagan’s Revolution,” and used Mr. Shirley’s research numerous times without proper attribution.
In two letters to Mr. Perlstein’s publisher, Simon & Schuster, Mr. Shirley’s lawyer, Chris Ashby, cited 19 instances of duplicated language and inadequate attribution, and demanded $25 million in damages, a public apology, revised digital editions and the destruction of all physical copies of the book. Mr. Shirley said he has since tallied close to 50 instances where his work was used without credit.
The controversy has three different parts: Perlstein's use of online notes instead of notes within the published book; the ethical status of Perlstein's use of material from Shirley's book, with or without attribution; and the legal status of that usage. The most problematic of the accusations seem to be instances of what has been called "patchwriting", and that's the aspect of the controversy that I want to focus on.
My conclusion will be that Perlstein did indeed take idea-combinations and associated word-choices and word-sequences from Shirley; and he sometimes did this without specific attribution; but what he did seems to be within the normal boundaries of research methods for narrative histories, as indicated by the fact that Shirley did quite similar things with his own sources.