Getting Names And Ages

I am getting the names and the ages along with as much history as I can of the persons I photograph. I am following Eleanor Lazare's advice on this, I think she is right it adds to the photographs, humanizes them even more. To accomplish this, I am taking a small digital photo of each person I photograph, and then writing down the number of that photograph next to their information in my notebook. I should be able to file the digital photos/numbers and then refer back to them months-years later when I am naming the successful 4x5  portraits.