The "Lost Books of the Bible" consists of all the available ecclesiastical writings of early Christian authorities that are known to exist, and yet were omitted from the authorized New Testament. Whether they are canonical or not, at least these writings are of very great importance. The list of books is below
The Gospel of the Nativity of Mary
The Book of James, or Protoevangelion
The Gospel of the Infancy of Jesus Christ
I Infancy
II Infancy
III Infancy
IV Infancy
The Epistle of Jesus Christ
The Gospel of Nicodemus
The Apostles' Creed
The Epistle of Paul to the Laodiceans
The Epistles of Paul to Seneca
The Acts of Paul and Thelca
First Epistle of Clement to the Corinthians
Second Epistle of Clement to the Corinthians
The General Epistle of Barnabus
The Epistle of Ignatius to the Magnesians
The Epistle of Ignatius to the Ephesians
The Epistle of Ignatius to the Romans
The Epistle of Ignatius to the Trallians
The Epistle of Ignatius to the Philadelphians
The Epistle of Ignatius to the Smyrnaeans
The Epistle of Ignatius to Polycarp
The Epistle of Polycarp to the Philippians
The Shepherd of Hermas
The Lost Gospel According to Peter