This is only the beginning, of what is even a more serious  theological deception than the exclusion of the 15 books of the Apocrypha from the Old Testament in the late 1800s.  We find that, indeed, this may be only the tip of the iceberg.  We know, which books Eusebius dealt with, in his limited role as a minor scholar prior to his promotion to the most important and influential theologian in Christian history.  What we don't know, is how many books he just dismissed outright, with no mention or, which books he had limited or no, knowledge of.   Here are some indications that many more genuine books were written but simply ignored or unknown to the first editor of the Bible.
            In a Syriac translation of the Catholic Bible by Bishop Philoxenus in 508 A.D, the Coptic Bible, and from Origen we find 1 and 2 Clement.  The Armenian Bible has a third letter to the Corinthians and efforts have been made to include Advice of the Mother of God to the Apostles and The Books of Criapos.  The Ethiopic Bible includes books nowhere else found: the Sinodos, (a collection of prayers and instructions by Clement of Rome), the Octateuch, (an epistle from Peter to Clement of Rome), the Book of the Covenant (rules of church order, the second relates instructions from Jesus to the disciples), and the Didascalia (rules of church order).  Clement is credited with writing the Apostolic Constitutions encompassing eight books.
            Add to this, a very strange reality.  Eusebius studied under Pamphilius, in the church at Caesarea. Pamphilius was an ardent disciple of Origen and Eusebius was said to be guided by the Origenist tradition.  Origen accepted the following books as being of true Christian origin: the Gospel of Peter, the Gospel of the Hebrews, the Acts of Paul, I Clement, and, the Didache.  Contrary to this, Eusebius considered the Gospel of Peter a heretical work and the Gospel of the Hebrews as "refuted". 
            Origen refers to, but does not verify the authenticity of, these writings: the Gospel of Thomas, the Gospel of the Twelve, the Gospel of Basilides, the Gospel of the Egyptians, the Gospel of Matthias, , and the Preaching of Peter.  Eusebius does not refer to the gospels of the Egyptians, Basilides, the Twelve, or the Preaching of Peter, but declares the gospels of Thomas and Matthias heretical. 

            One, very careful consideration, must be given, at this point.  Eusebius was not an inspired theological genius, but a minor scholar who was in the right place at the right time.  Very little, is known about his past, but there are indications he came from a wealthy and influential background.  His theological training was tightly focused on a limited view of theological reality and he only chose the authority of those few he knew.  And, as far as the records speaks; he was the sole authority on all final decisions concerning original church doctrine.  
            Suddenly, Eusebius finds himself in the court of a Roman Emperor, who is forming a new religion by combining Christian and pagan beliefs to unite both, under one single divine authority; the Roman Emperor.  He is dedicated to this man, writes highly of him, and he is given charge of forming this religion to the desires of Emperor Constantine.  We have no way of knowing how, or why, he chose what he did, to be included in the New Testament of his first Bible, but we certainly can't be assured it was done honestly.  What we can be assured of, is that there is serious question as to whether any of those books eliminated were chosen for any other reason than to satisfy the Emperor Constantine. 

            It is, with all the realities discussed above in consideration, that we propose; at least some, if not most, or all of the New Testament books ignored, refuted, or considered heretical by Eusebius are actually inspired works.  And, that these many of works were accepted and used by the early church Jesus established, until Eusebius thought otherwise.  There is no absolute way of knowing, whether these works purged from the New Testament were inspired or, for that matter, whether the books included were inspired.  What we do know is they were accepted until Eusebius, under the rule of the Emperor Constantine and the church founded by Constantine, decided otherwise.  And, scripturally, there is clear evidence that there was plenty of material to write about:
            "And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen. (John 21: 25)
            "Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us, Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word; (Luke 1:1-2)