One glass drawing slate entitled The Cross Transparent Drawing Slate: for Public Schools and all Students of Drawing, manufactured by Ginn & Company, Boston, New York and Chicago, ca. 1893. A cardstock label with directions for use is mounted behind the slate itself, which is contained within a wooden frame. "Patents. February 7th, 1893. November 14th, 1893. Patents Pending." is printed below the title.
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