Recently i found the next address:

http://classicsindex.wikispaces.com/migne_PL

In this space are being developed a new list of contents with a new and useful nomenclature for the volumes.

Migne, Patrologia Latina

[LEGEND: asterisk (*) indicates no full text access so far found; Ha = Harvard copy – either Widener or Andover-Harvard Theological Library; St = Stanford copy; NYPL = New York Public Library copy; Br = Brepols reprint; ND = No Date visible]

[See also the index at paginasprodigy.com – with color-coded indications of date, publisher, and warnings about mangled state of the scanned version – and a number of volumes I had not yet found…but am using with thanks for revisions to the list below]

The date given is from the first (“Patrologia Latina”) title page – I have sometimes noticed (e.g. PL 35) a discrepancy between the date on that page and that on the author title page.

The owners of the page have noted too the fact that some volumes have two different years of imprint into the same book. And in this case, too, they decided took the first number.

Greg.