http://www.redbooks.ibm.com/Redbooks.nsf/portals/systemz - System Z Redbooks (951 volumes and growing. The 13 volume "ABC's of System Programming" series is here).

http://tommysprinkle.com/txxos - Tommy Sprinkle's "IBM 370 Bare Metal Programming"

http://tommysprinkle.com/mvssp - Tommy Sprinkle's "MVS Systems Programming"

http://punctiliousprogrammer.com/ibm-mainframe-assembler .

http://www.longpelaexpertise.com.au/ezine/LearnAssembler.php .

http://www.share.org/p/cm/ld/fid=51 - SHARE "Z Next Gen" portal, with add'l SHARE access

http://bitsavers.org/pdf/ibm - Bitsavers IBM Folder

http://bitsavers.org/pdf/ibm/360 - System/360 here

http://bitsavers.org/pdf/ibm/370 - System/370 here

http://i.stanford.edu/pub/cstr/reports/cs/tr/68/87 - John Ehrman's lecture notes for Computer Science 139, Stanford University, 1968

https://share.confex.com/share/118/webprogram/Person3921.html - List of links to some of John's SHARE presentations.

http://www.cbttape.org - CBT Site

http://www.z390.org - z390 Portable Mainframe Assembler and Emulator Project


http://www.tachyonsoft.com/s8158.pdf - 64-bit z/OS Assembler Coding

http://epicovers.com/datasets/source - Hundreds of Assembler Source Files

http://groups.google.com/forum/#!topic/bit.listserv.asm370 - Asm370 ListServe

http://www.longpelaexpertise.com.au/articles.php - List of Longpela Expertise Articles

http://www.prycroft6.com.au/vs2sw - OS/VS 3.8J Freeware

http://www.prycroft6.com.au/misc/3270eds.html - 3270 Extended Data Stream

http://www.prycroft6.com.au/misc/3270grfx.html - 3270 Graphics

http://www.quadibloc.com/comp/cp0201.htm - Floating Point Formats

http://www.cbttape.org/links.phtml - CBT Tape List of Links

http://gsf-soft.com/Freeware - Gilbert Saint-Flour's Freeware Site

http://www.marcsweb.com/mnweb_tiptrick.shtml - Marc Niegowski's Tips & Tricks

http://ed-thelen.org/comp-hist/merged.html - Ed Thelen's Computer History Links

http://www-cs-staff.stanford.edu/~uno/index.html - Don Knuth

http://www.bobbemer.com - Bob Bemer, early programming language innovator