In the short term it will obviously be hard for you to go to games without your Dad, but he clearly loved the Albion too, so don't give up on the family tradition.
A fellow Albion fan of same age (and birth-month) as me, and that makes me think of how I might've been in the same pubs and clubs, or rubbed shoulders at the Goldstone with Graham.
Life is a time encapsulated, regardless of it's length. I hope his was filled with many wonderful things, the pride of family and friends, and all the experiences that are, timeless.
Carry the best of him with you, I am sure that eventually, we will see them again.