Contractors Make Remarkable Discovery at Oklahoma SchoolWhile replacing whiteboards, contractors found 98-year-old chalkboards giving lessons on cursive and telling the story of the first Thanksgiving.Get more newsLiveonPrintSaveCreate your free profile or log in to save this articleJune 15, 2015, 11:09 PM UTCBy Harry SmithHarry SmithHarry Smith is an NBC News Correspondent.