""Your Old Landmarks of Boston is a perfect storehouse of Information,"" Henry W. Longfellow told Samuel Adams Drake almost a century ago. That being true a hundred years ago, the praise is even more relevant today, when many of the old and venerated landmarks are gone, victims of time and progress in a rapidly changing world.One hundred years ago the author bemoaned the disappearance of the really historic buildings of Boston. This monumental history of Boston work was his appeal to the historical conscience. He wrote: ""For Fifty years our men of progress have been pullin.