Other Investigations
McCrone was also involved in other notable historical inquiries. His microanalysis produced evidence that the ink of the Vinland map contained a substance (synthetic anatase) not incorporated in ink until the 1920s, from which he concluded that the map was a forgery. As was the case with the Shroud of Turin, other scientists were involved in studying this object, and some of them reached conclusions that differed from McCrone's. But only McCrone worked microscopically with the tiny physical particles that had been removed from the Shroud with tape in his new laboratory.
On occasion, McCrone was given hair samples of famous people to analyze. Based on such analysis, he rejected the hypothesis that Napoleon had been poisoned with arsenic, but he concluded that Beethoven had suffered from lead poisoning.
McCrone microscopically examined the physical forensic evidence: hairs, fibers, blood, etc. that led to the conviction of Wayne Bertram Williams as the Atlanta child killer.
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