To make this slightly less off topic, three of the
U-Matic tapes I have are
 in an SRA Computer Training Library boxed set containing:
    MVS Concepts and Facilities - Mini-Course 2 - Introduction to Job
    Processing
    MVS Concepts and Facilities - Mini-Course 5 - MVS System Programs
    MVS:  JCL Coding - Mini-Course 11 - Requesting Space for DASD Data Sets
 I found them in my current employer's document library years ago.  Any
 player(s) we had were long gone, so I've never seen them. 
I have a umatic deck and capture hardware if you wanted them converted.
                - Ethan
--
: Ethan O'Toole