Answered By: Reference Librarian Last Updated: Jan 11, 2018 Views: 800
"E" is short for "Early Reader". The Early Reader books are arranged on the shelf by the author's last name.
In CLICsearch, you'll see "Northwestern Early Reader" in the Location column of the record. The call number will begin with the first letter of the author's last name, which tells you where the book is located on the shelf.