1 It struck me that it might have been fastened by a mere oversight, so I took out my bunch of keys and tried to open it.
The Adventures of Sherlock Holmes By Arthur Conan DoyleContext Highlight In XII. THE ADVENTURE OF THE COPPER BEECHES
2 It is likely that the Musgrave who held the secret died in the interval, and by some oversight left this guide to his descendant without explaining the meaning of it.
The Memoirs of Sherlock Holmes By Arthur Conan DoyleContext Highlight In VI. The Adventure of The Musgrave Ritual
3 Left by the best elements of the South with little protection or oversight, he has been made in law and custom the victim of the worst and most unscrupulous men in each community.