Beauty must exert what power it could in the boudoir and on the back stairs.
The housekeeper made a hasty exit by way of the back stairs.
Perhaps after a few hours, or a day, I would go up the back stairs, change my stockings—and the sun would shine again.
Watch the gate, then—let there be no noise—and come up by the back stairs.
While she was inspecting the kitchen, Mike and I carried her trunk up the back stairs.
Then he turned into the rear hall and went down the back stairs.
In order to get out of this room one had to pass through a hall into another room, where a back stairs led down to the rear yard.
She ran from the room and down the back stairs, with Mary at her heels.
"Under the kitchen porch, through the little cellar window and up the back stairs," she explained.
The back stairs is good enough for me, so I'm thinking it's good enough for you.