During my time at IBM I contributed to several IBM publications. Most of these are still available on the IBM Redbook website.
SG24-7123 z9-109 Crypto and TKE V5 Update
SG24-7318 Encryption Facility for z/OS Version 1.10
SG24-7848 System z Crypto and TKE Update
The original version of SG24-7803 is no longer published on the IBM Redbooks site, so I have provided a link to down load it. This book is very different from its replacement volume.