"I neglected to mention," Silas says, after making a note of what the stranger has said on an envelope, "that you can open and close the gate from this room, and lock and unlock it.
"The Mystery of the Locks"
Edgar Watson Howe
He felt, as he went out, as though he were going, with key and candle, to unlock some old rusty door that led into secret rooms.
"Fortitude"
Hugh Walpole
It took Pauline scarcely a minute to get into her night-dress, sweep her offending white dress into a neighboring cupboard, unlock the door, and put her head on her pillow.
"Girls of the Forest"
L. T. Meade