 In the U.S., a July 2014 criminal case decision in Massachusetts, Commonwealth v. Rex, 469 Mass.36 (2014), made a legal determination of what was not to be considered "pornography" and in this particular case "child pornography".It was determined that photographs of naked children that were from sources such as National Geographic magazine, a sociology textbook, and a nudist catalog were not considered pornography in Massachusetts even while in the possession of a convicted and (at the time) incarcerated sex offender.