Here's some paintings, there's more than this I have seen more but you gotta search them out..
http://www.bestpriceart.com/painting/?image=flippi10.jpg&tc=cgfa painting1 Lippi app 1475
http://btr0xw.rz.uni-bayreuth.de/cjackson/flippi/p-flippi10.htm ""
http://www.abcgallery.com/M/michelangelo/michelangelo70.html painting3 Michelangelo. 1546-1550
Then I found this:
http://www.unicorne.org/orthodoxy/avrilmai/stpeter.htm writing modern
Where can I learn more about the potential truth to the story of St. Peter being crucified upside down?
Answer:
Dr. Alexander Roman
alex@unicorne.org
The death of St Peter the Apostle and also, of course, how he died, was already known to the Christian world at the time of the writing of the Gospel of John.
We know this from John 21:18-19 where the Risen Christ relates Peter's future martyrdom to him "This spake he, signifying by what death he should glorify God."
There are numerous testimonies concerning Peter's actual presence in Rome, and the most compelling is at the end of Peter's First Epistle, 5:13 "The church that is at Babylon . . ." This is a symbolic allusion to Rome, as is mentioned in other sources as well.
The death of Peter is already mentioned in Clement's Epistle to the Corinthians in the fifth chapter and we know this Epistle was read in church as part of Scripture for many years.
Tertullian in his "De Praescriptione" in the 35th chapter states that Peter "emulated the Passion of the Lord." In the 15th chapter of his "Scorpiace" Tertullian says, recalling John's Gospel, Chapter 21, that "Peter was girded by another, as he was bound to the cross."
Again, these and other writings attest that Peter's death on a cross at Rome was well known throughout the Christian world.
It is in the New Testament deuterocanonical book of the Acts of Peter that we read of his being crucified upside down under the Neronian Persecutions.
Such books were read widely by the early Church, often even during liturgical services themselves. But they didn't make it into the official canon of the New Testament for one reason or another.
They are perfectly orthodox in and of themselves, such as the Gospel of Nicodemus, and the Church often used the information contained in them for its liturgical celebrations, such as the Feast of the Entry into the Temple of the Virgin Mary, an event in her life that we find only in the orthodox deuterocanonicals. So, in liturgical form, these books continue to be read in the Church.
There were also books written in this same style by Gnostics and others to promote their agendas that were condemned by the Church and they don't figure in this deuterocanonical collection.
Here is an on-line translation of the Acts of Peter:
http://www.earlychristianwritings.com/text/actspeter.html