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VERSION:2.0
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UID:onejoy-event-13257@onejoy
DTSTAMP:20261002T182308Z
DTSTART:20260923T173000Z
DTEND:20260923T193000Z
SUMMARY:Heliographs: Frontier Arizona's Communication by Sunlight
LOCATION:Oro Valley Public Library\, Meeting Room
DESCRIPTION:Adults (18+)\, Teens (14-18 years). During the 1880s in Arizona\, U.S. Army soldiers used high quality\, sunlight reflecting heliographs for communication. Learn how this technique was used to keep soldiers and settlers safe.\n\nPresenter: Lee Krsiean - retired CIA Intelligence Analyst\n\nSponsored by the Oro Valley Historical Society.\nhttps://onejoy.io/event/13257
URL:https://onejoy.io/event/13257
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