The next news of Mr. Master was gained from the keeper of a bath-house and swimming-pool known as the Imperial natatorium.
"Philo Gubb Correspondence-School Detective"
Ellis Parker Butler
In its centre was a long tank of water, set below the level of the floor like the swimming pool of a natatorium.
"The Gods of Mars"
Edgar Rice Burroughs
With the nodding, white feather to guide him, he followed them down the walk, lost them for a second, saw them turn in at the wide-open doors of the natatorium, saw them pause there, just inside.
"The Happy Family"
Bertha Muzzy Bower