Subsequent reviews of "Pippi Longstocking" echoed the general opinions of von Zweigbergk and Bolin towards the book, until John Landquist's criticism in an August 1946 piece published in "Aftonbladet", titled "BAD AND PRIZEWINNING." Landquist, who worked as a professor at Lund University, argued that the book was badly done, harmful to children, and that Pippi herself was mentally disturbed. Further criticism of Pippi's supposedly "unnatural" and harmful behavior followed in an article in the teachers' magazine "Folkskollärarnas Tidning" and in readers' letters to magazines. This debate over Pippi's performance of childhood colored the reviews of the sequel "Pippi Goes On Board" (October 1946), some of which responded to Landquist's argument within the review itself. Regardless, Pippi continued to maintain her popularity and was featured in a range of merchandising, adaptations, and advertising.