Junie B. Jones #4: Junie B. Jones and Some Sneaky Peeky SpyingPaperback, 24 May 1994

Illus. in black-and-white. Junie B. is the bestest spier in the whole world.
That's 'cause she has sneaky feet. And her nose doesn't whistle when she
breathes. But guess what? Junie B. might be "real" sneaky and "real"
peeky, but when she spies on her teacher, she could get into "real"
trouble!