Heliographs: Arizona's Communication by Sunlight

Oro Valley Historical Society
Heliograph rendering

When: Wed., Sept. 23, 10:30 a.m.-12 p.m.

Free
Hear how early military personnel used the sun and morse code to share information keeping their colleagues and early settlers safe before texting was a thing!

Event Contact Email [email protected]

Event Contact URL www.ovhistory.org

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