We present experimental studies of the NaCs molecule that are currently underway in our laboratory. The opticaloptical double resonance method is used to obtain Doppler-free excitation spectra for several excited states. Selected data from the 53Π0 and 43Π0 electronic states are used to obtain Rydberg-Klein-Rees (RKR) and Inverse Perturbation Approach (IPA) potential curves. We have also mapped the repulsive wall of the 1(a) 3Σ + potential using many resolved bound-free fluorescence spectra from individual rovibrational levels of the 53Π0 electronic state to the 1(a) 3Σ + state. Using the determined 53Π0 state potential, we fit the repulsive wall of the 1(a) 3Σ + state to reproduce the experimental spectra using LeRoy’s BCONT program. A slightly modified version of BCONT is also used to fit the relative transition dipole moments, µe(R), as a function of internuclear separation R, for the various bound-free electronic transitions. We also present bound-free spectra and BCONT simulations for the nearby 43Π0 electronic state of NaCs.