She had sat quite a long time at it, spinning, and delighting in its old friendly purr and clatter.
"The Pioneers"
Katharine Susannah Prichard
When all this array of pussys had saluted the Queen they sat down upon the grass and began to purr, while some indulged in a yawn behind their paws and others commenced to wash their faces; for they had just been aroused from a long nap.
"Dot and Tot of Merryland"
L. Frank Baum
"Oh, but you'll make me purr," he said.
"The Pastor's Wife"
Elizabeth von Arnim