Paths of Exploration Junior
- The Great Tulip Trade has replaced Rembrandt and the Boy Who Drew Dogs, which has gone out of print. Click here to download the replacement text. (Only needed for pre-2021 printings.)
- Neo Leo: The Ageless Ideas of Leonardo da Vinci has replaced Leonardo and the Flying Boy, which has gone out of print. Click here to download the replacement text. ((Only needed for pre-2021 printings.)
- Native American Indians has replaced From the Good Mountain, which has gone out of print. Click here to download the replacement text. (Only needed for pre-2021 printings.)
- Nature (Usborne First Sticker Book) has replaced Animal Kingdom Sticker Activity Book: Into the Wild, which has gone out of print. Click here to download the replacement text. (Only needed for the 2016 edition of the textbook.)
- The Raft has replaced Daniel Boone's Great Escape, which has gone out of print. Click here to download the replacement text. (Only needed for the 2016 edition of the textbook.)