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In page Harry Houdini:

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For most of 1916, while on his vaudeville tour, Houdini had been recruiting – at his own expense – local magic clubs to join the S.A.M. in an effort to revitalize what he felt was a weak organization. Houdini persuaded groups in Buffalo, Detroit, Pittsburgh, and Kansas City to join. As had happened in London, he persuaded magicians to join. The Buffalo club joined as the first branch, (later assembly) of the Society. Chicago Assembly No. 3 was, as the name implies, the third regional club to be established by the S.A.M., whose assemblies now number in the hundreds.[citation needed]