45. Mrs. M: The Thirty-nine Stops.
But as for 36... I have HE?RY, but no familiarity with recent children's works.
With some titles, there's a chance of deducing the malapropism, but the trouble is with others there is a need for satori-like insight- okay, when you have it, there's no doubt, but in the absence of sudden insight there seems to be no alternative route to the solution.