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We got our hands on a stash of mid century scientific diagrams from the archives of the Griffith Observatory, Los Angeles. This graphic print depicts the equation for the speed of light.
Newly mounted in a custom acid-free overlay window mat and protective plastic sleeve. The print is c. 1960s vintage; it's in very good condition.
Image size- 7w" x 4.5"
Over mat size- 11" w x 14" h