SALEM, Mass. — A team of researchers using historical documents and 21st-century archaeological techniques has confirmed the exact site where 19 innocent people were hanged during the Salem witch trials more than three centuries ago. The site, known as Proctor's Ledge, is a small city-owned plot of woods nestled between two residential streets and behind a Walgreens pharmacy, said Salem State University history professor Emerson "Tad" Baker, a member of the seven-person team, which announced its findings this week. Historian Sidney Perley had pinpointed Proctor's Ledge nearly a century ago as the site of the hangings by using historical documents, but his findings were lost to time, and myth, misconceptions and conspiracy theories had taken their place, Baker said.