100-year-old chalkboard drawings found in Oklahoma school

Slate chalkboards from the early 1900's were discovered during the renovation of a school in Oklahoma City, Oklahoma.
Slate chalkboards from the early 1900's were discovered during the renovation of a school in Oklahoma City, Oklahoma.
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Oklahoma's Hidden Chalkboards of Yesteryear - Sometimes Interesting

100-year-old chalkboard drawings found in Oklahoma school

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Austin Kleon — 100-year-old blackboard drawings found in Oklahoma

Chalkboard drawings frozen in time since 1917 found in Oklahoma school – Orange County Register

Graffiti on blackboard 100 years ago is discovered from under the blackboard of school - GIGAZINE

WIRIS on X: 100-Year-Old Chalkboard Drawings with a math lesson (and others). A school in Oklahoma discovered the intact drawings hidden in the walls during a reform process. / X

100-year-old Chalkboard Drawings Found In Oklahoma School

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