Simplify the following text for a Grade 5 native English-speaking person.
Original: Austen later compiled `` fair copies '' of 29 of these early works into three bound notebooks , now referred to as the Juvenilia , containing pieces originally written between 1787 and 1793 .
Simplified: Austen later put together `` fair copies '' of 29 of these early works into three notebooks . They are now called the Juvenilia .