almost a lost art. tracy smith will be reporting our sunday morning cover story. i m going to sit right down and write myself a letter > how is your handwriting? chances are it s not as good as theirs. does our legibility get better as we get older? no. what happens is we tend to peak around fourth grade. so that s it. reporter: a primer on penmanship and whether it matters anymore later on sunday morning. osgood: jan s story is is a story of love and devotion in the face of a terribly sad but increasingly common condition told by our barry petersen. yes, you look. yeah, i d say. i like people. reporter: her name is jan carleton. she has early onset alzheimer s disease. darling. reporter: but she is not just a stranger. to me, this story is personal. how are you? there are survivor of heart attacks. there are survivors of cancer. there are survivors of lung disease. there are no survivors of alzheimers disease. reporter: a story i never thought i would t