Harper Perennial is a paperback imprint of the publishing house HarperCollins Publishers. Harper Perennial has divisions located in New York, London, Toronto, and Sydney. The imprint is descended from the Perennial Library imprint founded by Harper & Row in 1964. In Fall of 2005, Harper Perennial rebranded with a new logo (an Olive) and a distinct editorial direction emphasizing fiction and non-fiction from new and young authors. In the end matter, books often feature a brand-specific P.S.