Many of the examples used in this chapter are found beneath your LabVIEW installation, beneath the "examples" folder.  You can open them from the file system or by using the NI Example Finder (from the "Help>>Find Examples" menu option), as described in the book.

examples/apps/tempsys.llb/Temperature System Demo.vi
examples/apps/tempsys.llb/Temperature Status.vi
examples/apps/freqresp.llb/Frequency Response.vi