I wouldn't read too much into the typed reply either - men just don't think of things like that. I know it wouldn't occur to my DH that something handwritten might mean more than something typed.

As for where to go from here, that is hard for anyone else to say. I wrote my father a letter when I was 23 and included my phone number. He rang when he got the letter and although it was awkward, he wasn't really anyone to me so I caught him on events of my family that he knew and he told me his version of what happened and why he left/stopped contact.