I am trying to discover the name and author of a book I loved as a small child.  Google has failed me.  Maybe you know this book?  Prepare for the terribly vague description:

1. It has black and white illustrations, sort of in the Edward Gorey style.

2. It features a sheep dog, or some other kind of shaggy dog.

3. There is a mop.

4. The flavour is, I believe, Victorian.

That’s all I have.  But I haven’t been able to get this book out of my head for the last, oh, twenty-three years.  Anybody know a children’s librarian who might be able to help?