Sometimes only one storyteller exists, and in this case there might be different levels of distance between the reader and author. In this mode, the frame tale can become more fuzzy. In Washington Irving's "Sketch Book", which contains "The Legend of Sleepy Hollow" and "Rip Van Winkle" among others, the conceit is that the author of the book is not Irving, but a certain gentleman named Crayon. Here the frame includes the world of the imagined Crayon, his stories, and the possible reader who is assumed to play along and "know" who Crayon is.