Plague of Frogs volume 4 was published in November 2012 (ISBN: 978-1-59582-974-0, cover price $34.99, 454 pages).
|from vol 1|
This fourth volume collects the following stories, with their respective virgin cover:
- The Warning
- The Black Godess
- King of Fear
This volume ends with a comprehensive art section (52 pages) divided by story and commented (I don't own the respective paperbacks but these sketches probably originates from them, therefore I don't thing this edition presents exclusive material). Note that at the very end there is a second afterword by Guy Davis related to his entire run on the series.
|first part commented by Guy and Mike (with art from both and Duncan Fegredo)|
|second part commented by Guy Dvis|
|3 pages features notes and cover sketches by Mike Mignola|
|Kevin Nowlan cover sketches for issue 3 (with notes)|
|third part commented by Guy Davis with some notes and ideas by Mike|
|this part displays 6 pages of pencils and cover sketches by Mike Mignola|
|3 pages afterword by Guy Davis|
The B.P.R.D. library edition as of June 2015:
Go to vol 1, vol 2, vol 3 and vol 5