21.   To Richard Pipes, Baird Professor of History at Harvard University, Volkogonov is an amateur historian but an extraordinary moral figure.

22.   Unease about the certainty of that conclusion has been expressed by an amateur historian who has had a rival theory and by the principal author of the DNA study.

23.   While some amateur historians have described the de la Pena papers as an elaborate hoax, most mainstream scholars of the period say they believe the memoir is authentic.

24.   Some are amateur historians.

25.   Today, the amateur historians study every detail along the muddy trenches of the Mannerheim line.