Best way to express deep (lifelong) gratitude to my father?

No, as I remember, the teacher was alive when he/she received the letter, but asked to be buried with it when not.

WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOSH.

that is all.