The construction of the so-called Bodmer Composite or Miscellaneous codex has been an ongoing problem since the publication of its constituent parts began in the 1950s. A recent inspection of high resolution digital images of P.Bodmer viii shows compellingly that this portion of the codex had more than one phase of use, was originally part of a separate codex, and was only later removed and joined to the other sections of the Bodmer “composite” codex. The New Testament manuscript known as P72 (P.Bodmer vii + P.Bodmer viii) is thus a codicological unity only in a secondary sense.
As of January2016lower resolution digital images of P.Bodmer viii have become available online at http://digi.vatlib.it/view/MSS_Pap.Bodmer.viii.
For textual studies see e.g. S. KuboP72 and the Codex Vaticanus (Salt Lake City: University of Utah Press1965) and J.R. Royse Scribal Habits in Early Greek New Testament Papyri (Leiden: Brill 2008) 545-614. Two important codicological studies (to be discussed in more detail below) are K. Junack and W. Grunewald Das Neue Testament auf Papyrus i. Die katholischen Briefe (Berlin: de Gruyter 1986) 16-25 and Wasserman “Papyrus 72 and the Bodmer Miscellaneous Codex.”