I don't recall this happening on-screen, but I would imagine that he would have signed his autograph at some point. (I mean, could you imagine him being at a non-emergency situation (say, a ribbon cutting for a children's hospital) and him refusing if a little kid came up to him and asked him for his autograph?
Also, again off-screen, there was probably paperwork involved in the eligible bachelors' charity auction he participated in.
Joy,
Lynn
