He’s been named a “living legend” by the Library of Congress. Next week veteran CBS newsman Bob Schieffer will be in Rockland to help out a local cause.Schieffer is the chief Washington correspondent for CBS News and anchors “Face the Nation.” He’s marking his 52nd year as a reporter covering national issues.He’ll be in Maine Thursday, August 6th at the invitation of a board member for the General Henry Knox Museum in Thomaston.Acting Director Ellen Dyer says they hope to sell more than 300 tickets to hear Schieffer speak. Proceeds from ticket sales will benefit the museum’s education and preservation programs.”It’s actually our biggest event of the year,” Dyer says. “We do something similar to this every year and a lot of excitement builds around it, and it’s a lot of fun.”Schieffer will speak at 6 p.m. a week from tomorrow at the Strand Theatre in Rockland. He’ll also take questions from the audience.Seats are still available and cost thirty-five dollars. For more information or to buy tickets you can call the General Henry Knox Museum at 354-0858.