This was my absolute fave growing up. I know I read it over and over. Will need to find a copy and hope my kids like it so I can read it over & over. 
 Update: Yep, it was still pretty great! Glad I re-read it. 
 Harriet loves to observe her friends and neighbors and write what she sees in her journals. This is all fine until she loses one of her books and all her classmates read what she has written about them - and they are not very happy. With the help of her faithful nanny, Ol' Golly, will she find a way to make amends?