  Z Cam stars are a small subset of dwarf novae that exhibit standstills in
their light curves. Most modern literature and catalogs of cataclysmic
variables quote the number of known Z Cams to be on the order of 30 or so
systems. After a four-year observing campaign and an exhaustive examination of
the data in the AAVSO International Database we have trimmed that number by a
third. One of the reasons for the misclassification of some systems is the fact
that the definition of what a Z Cam is has changed over the last 85 years to
what it is today. This has caused many stars formerly assumed to be Z Cams or
rumored to be Z Cams to be eliminated from the final list. In this paper we
present the results of our investigation into 65 stars listed at one time or
another in the literature as Z Cams or possible Z Cams.
