Oh, Henry

"Suddenly there was a scream or two from the women, and a commotion. Unperceived by the elders, May, the nine-year-old girl, in a spirit of play, had shut Agatha in the vault. She had then shot the bolts and turned the knob of the combination as she had seen Mr. Adams do.

The old banker sprang to the handle and tugged at it for a moment. 'The door can't be opened,' he groaned. 'The clock hasn't been wound nor the combination set.'

Agatha's mother screamed again, hysterically."

Many years ago, I ran across this story, but I could never recall what it was titled.