Warbler said:
you wouldn't call this;
http://en.wikipedia.org/wiki/Count_Dracula_%281969_film%29
part of the official cannon of the Hammer series of Dracula films, would you?
Nice point, but that's not a Hammer movie.
But "Abbot and Costello Meet Frankenstein" has Bela as Dracula, Lon as the one and only Wolf Man, both Glenn Strange the heir apparent AND Lon Chaney Jr as Frankenstein, and of course it's BY UNIVERSAL.
If you ignore the antics of the leads, the movie makes just as much sense as House of Dracula (by which I mean little to none).