Agawam - The public is invited to the Agawam Historical Association’s Autumn Meeting on Thursday, Oct. 15, where noted historical archaeologist Bob Drinkwater will present “Who Made the Gravestones in Agawam’s Old Burying Grounds.” Drawing from his latest book, “Keeping Memory Alive in Western Massachusetts - A Regional Guide to Gravestone Carvers and Their Work, ca. 1720 to 1850,” Drinkwater will discuss their work as it appears in Agawam’s his…