os/360

TechInfo:OS:IBM Mainframes:OS/360 Installation:
http://www.neurotica.com/wiki/TechInfo:OS:IBM_Mainframes:OS/360_Installation#Building_the_base_OS.2F360_MVT_system

centos for s390
ftp://centos.mirrors.atwab.net/4.9/isos/s390/

zlinux installation:
http://perso.wanadoo.es/rptv2005/zlinux/en/thinkblue64.html

suse for s390:
http://en.opensuse.org/SDB:Hercules_s390_emulation#IPL_.28Initial_Program_Load.29_the_SLES_Installation