  We report on observations of four early-type galaxies performed with the
Rutgers Fabry-Perot in order to search for Planetary Nebulae (PNe) in these
systems. The aim is to use the PNe as kinematic tracers of the galaxy
potential. We describe our data reduction and analysis procedure and show that
the proper calibration of our detection statistic is crucial in getting down to
our limiting magnitude of $m_{5007} = 26.1$. In the case of the two Leo
galaxies we find moderately sized samples: 54 PNe in NGC 3379 and 50 PNe in NGC
3384; NGC 4636 (2 PNe) and NGC 1549 (6 PNe) are included for completeness. We
present our samples in tabular form, as well as the spectrum for each PN. We
constructed simple non-parametric spherical mass models for NGC 3379 using a
Monte Carlo Markov Chain method to explore the space of likely mass models. We
find a remarkably constant mass-to-light ratio within five half-light radii
with an overall $B$ band mass-to-light ratio $\sim 5$. A simple mass-to-light
estimate for NGC 3384 yields $\Upsilon_B \sim 11$, but is likely an
overestimate.
