<p>Jonathan Appell of Hartford, Conn., explains the repairs needed for a mortise and tenon gravestone in the Demersville Cemetery on Tuesday, September 16, in Kalispell. (Brenda Ahearn/Daily Inter Lake)</p>
September 16, 2014
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September 16, 2014 8:30 p.m.
Art of preservation: Group learns restoration tips for historic cemetery
Not all historic gravestones are made of stone.