Norrköpings Tidningar , also known as NT, is a Swedish language daily newspaper with its main distribution in northern and eastern Östergötland, Sweden. The newspaper was founded in 1758 as the Norrköping Weko-Tidningar, and published its first issue on 14 October of that year. Norrköpings Tidningar is Sweden's oldest continually published newspaper still in print, and has published six days a week since 1871. The paper's principal owner is the Erik and Asta Sundin Foundation, named after Erik Sundin, who served as editor-in-chief of the paper from 1899 until 1929, and his widow, Asta Sundin. The foundation has owned the paper since 1947.