Chad Finn of the Boston Globe and formerly of the Concord Monitor joined us Tuesday to discuss the new book he edited, “The Boston Globe Story of the Celtics 1946-Present: The Inside Stories and Acclaimed Reporting on the NBA’s Banner Franchise.” The book takes you from the team’s humble beginnings through 18 NBA championships with a cast of amazing writers throughout the years like Bob Ryan, Jackie McMullen, Dan Shaugnessy, Bob Sales and more. There are classic pictures from cover to cover and a foreword by former Celtic Isaiah Thomas.