... New England coast, that whale, or sperm, oil was used for lighting purposes, and many of the old whale-oil lamps are still in existence. The light they gave was dim and smoky, but it was far better than no light at all. As the years passed, whales became more and more scarce, until sperm oil was selling at over two dollars a gallon. Only the richest people could afford to pay that, and the poor passed their evenings ... — American Men of Mind • Burton E. Stevenson