Toby also featured in the novel Sherlock Holmes vs Dracula; or, The Adventures of the Sanguinary Count by Loren D. Estleman, when Watson and Holmes called on Toby to track Count Dracula after finding him in a meat-packing district -- Dracula's carriage having rolled through a distinctive piece of rubbish -- allowing the two to track Dracula to Watson's house in time to learn that he has abducted Mary Watson.
Based on the above text, what's the best answer to this question: was mary watson in the sherlock holmes books?
yes