HarperCollins is one of the Big Four publishing houses in the U.S. The company was founded in 1989 and is headquartered in New York City. Outside the U.S., its books are sold in Canada, New Zealand, India, Australia and the U.K. Many popular children?s books are published thr... Read Moreough HarperCollins, including Shel Silverstein novels, the Pinkalicious series, and Fancy Nancy. Many of these children?s books are written to help encourage children to read. The company?s ?I Can Read? books are written in five levels (from first book to advanced levels) to ensure that kids will find the right match for their reading level. HarperCollins also offers box sets of some of its more popular series, such as The Complete Ramona Collection and Fancy Nancy Petite Library.