z/OS V1R9.0 Migration
IBM
z/OS V1R1.0 UNIX System Services Connection Scaling Reference
z/OS V1R1.0 DFSMShsm Data Recovery Scenarios
Host Connection
z/OS V1R11.0 Comm Svr: IP Programmer's Guide and Reference
Unified Messaging: Subscriber’s Guide (Types 0,1,2,3,4 and 9)