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Image Information
Rev. Samuel Read Hall, inventor of the chalkboard. File historyLegend: (cur) = this is the current file, (del) = delete
this old version, (rev) = revert to this old version.
LinksThe following pages link to this file: License: This image is in the public domain in the United States because it was published in the United States prior to January 1, 1923 or its first publication anywhere in the world was prior to January 1, 1909.
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