NGO - Publications include an annual world report and other reports by theme and region; reports on country conditions; most available on line as well
News and commentary on the "Great Writ of Liberty" and the death penalty
a bit outdated but a nice overview
Many general statistics (including corrections)
U.S. Sentencing Commission - L4 and LSO
Title VI. Habeas corpus; proceedings in forma pauperis F.R.A.P. 22. Habeas corpus and section 2255 proceedings F.R.A.P. 23. Custody or release of a prisoner in a habeas...
Frumer, Louis R.; Vol. 17: Postconviction (Prison Legal Services)