I find that Parts 1 and 2 appear as Chapters 43 & 44 in "Computer Structures: Readings and Examples" (Bell & Newell; 1971), but that seems to be it for public availability. For those chapters, see: http://research.microsoft.com/en-us/um/people/gbell/CGB%20Files/Computer%20S tructures%20Readings%20and%20Examples%201971.pdf Otherwise prepare to be confronted by an IEEE pay-wall :-<. About $30 a part . From: Paul Birkel [mailto:pbirkel at gmail.com] Sent: Wednesday, December 16, 2015 12:58 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: The Structure of SYSTEM/360 (Blaauw & Brooks, et al.) This was the five-part seminal description of the S/360, published in the IBM Systems Journal, Volume 3, Number 2. I've very much like to read all five parts. Does anyone have a copy that might be shared? Thank you, paul