The purpose of this study was to determine if a correlation existed between the selection of recreational nonfiction books from a school library media center by elementary school students in grades four through six and the measured interest, as generated by the Student Interest Inventory, of the students. Data for this study was collected during the period September, 1982 and April, 1983 at Sunnyside Elementary School, North Clackamas School District Number 12, Clackamas, Oregon. The raw data for the measured interest and recreational nonfiction books checked out were arranged by Dewey Decimal Classification tens. By using the Pearson product-moment correlation formula a significant coefficient was found and it was concluded that a correlation did exist between measured interest and nonfiction recreational books actually checked out of the library media center.