President Barack Obama made the first public appearance of his 10-day Martha’s Vineyard vacation today, stopping into the Bunch of Grapes Bookstore in Vineyard Haven for some summer reading. CBS News White House correspondent Mark Knoller reports that Mr. Obama was given the newly-released book “Freedom,” a work of fiction by Jonathan Franzen. Franzen is on the cover of this week’s Time Magazine; his previous novel, “The Corrections,” was a national bestseller. – from CBS