In Paper Mario: Sticker Star, Mario can read newspaper headlines inside Decalburg. These surround Luigi and his whereabouts, updating after Mario finds them.
In Port Prisma in Paper Mario: Color Splash, a Toad sitting near the Prisma Café reads the Prisma Times, in its first officially named appearance. He will read Mario a headline from it if he pays 10 coins, which serves as a hint for what Mario must do next.
After being defeated by Mario in the Sacred Forest, Kamek recalls that his magic was described as "a veritable all-you-can-eat buffet of chaos" by the Prisma Times.
Paper Mario: Sticker Star
Paper Mario: Color Splash