Upton Sinclair,
The Jungle — Chapter 6
(1906)
“ They had begun to question the old lady as to why one family had been unable to pay, trying to show her by figures that it ought to have been possible; and Grandmother Majauszkiene had disputed their figures—"You say twelve dollars a month; but that does not include the interest." Then they stared at her. "Interest!" they cried. "Interest on the money you still owe," she answered. "But we don't have to pay any interest!" they exclaimed, three or four at once. "We only have to pay twelve dollars each month." ”
