My father suffered a stroke in 2009 and became a different person overnight. I look to records—photos, letters, and email—in an attempt to hold on to the memory of the optimistic, social, curious, fun-loving, affectionate, and methodical person I used to know. My dad was an avid photographer, prolific letter writer, and careful record-keeper, so we have albums, letters, paper records, and diaries to draw on.