[Security400] Looking for iSeries 400 System API Reference book - Where is it?

[Jim Langston <jlangston@xxxxxxxxxxx>]

In the "Tips and Tools for Securing Your iSeries" in chapter 16 under TCP/IP
I see this:

TCP/IP Several TCP/IP servers (such as FTP, TFTP, TELNET, and REXEC) provide
exit points. You can add exit programs to handle log-on and to validate user
requests, such as requests to get or put a specific file. You can also use
these exits to provide anonymous FTP on your system.

*       "TCP/IP User Exits in the iSeries 400 System API Reference book"

I am searching all around for this book in the information center and can't
find it.  Where is this beast hidden?  Thanks.

I'm sure this question was probably asked and answered before, but since we
don't have an archive for security400 I have to ask again.

Thanks,

Jim Langston