Lost Works You'd Like to See Recovered

What works no longer extant would you like to see recovered? Here is my top 10 list.

1. The entire Commentary on Matthew by Origen
2. The Egerton Gospel
3. Matthew's Logia of Jesus mentioned by Papias
4. The complete works of Tacitus
5. The Yue Jing (樂經)
6. Any of the original works of either Zeno, Cleanthes, or Chrysippus
7. The very first letter to the Corinthians by Paul (I Cor. 5.9)
8. Q, if it existed
   
9. The Book of Remedies (thanks Jim)
   
10. Another form of the Homeric epics
    

Update: Thanks to Jim Davila for the title of #9.