Northborough – The Northborough Free Library will hold a gravestone rubbing workshop Monday, Aug. 5, from 6 to 8 p.m. at Howard Street Cemetery. This workshop begins with a tour of the cemetery and a talk about the lore and art of gravestones through the years.?A demonstration of rubbing a gravestone follows.?Participants will then get a chance to create their own rubbing. All materials are provided.?This workshop is appropriate for ages 16 and over.?Register?at the library's reference desk, 508-393-5025, ext. 5, or email [email protected].