Harry Jones was mentioned in 1, but never seen on screen.
In chapter 1 of Dark Shadows, Marilyn Ross' first novel in the Dark Shadows Series published by Paperback Library, the taxi driver is referred to as Henry Jones (Harry is frequently a nickname for Henry). He drove Victoria to Collins House, all the way talking about the strange Collins family, much like waitress Maggie Evans had done earlier in the same chapter. He has a flat tire on the way to Collins House and Vicki holds a flashlight as he attempts to change it. Interestingly, in episode 1 of the show, it is mentioned that he is late picking Vicki up at the Collinsport Inn because he is changing a flat tire. The dialogue in the novel is not from the TV script, though the introductory scenes are somewhat similar.