Continuity mistake: In Part 1, chapter 23, Annie comes in with the Royal typewriter. The typewriter is described as having glass panels set into its sides. But in Part 3, chapter 42 it says that the typewriter had gray sides.
Continuity mistake: In the end of Part 1 chapter 23 Annie places the Royal on the board that she has made for the wheelchair. But 2 pages later it says that it stood on the bureau.