Michael Press interacts with the two recent books arguing that the Shapira scroll fragments were genuine ancient artifacts. He disagrees. For the books, see here and here (and note the links).
I have noted earlier essays by Dr. Press on the Shapira affair here and here.
For Chanan Tigay's Shapira book, see here and links. And for an article in PEQ by Shlomo Guil arguing for the authenticity of the scroll, see here.
For subsequent PaleoJudaica posts on the subject, see here (also noting work by Press) and links.
This AJR essay has some interesting details that are new to me. Did you know, for example, that Shapira's daughter published a fictionalized account of the Shapira scroll affair in a novel?
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