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Multi-wavelength observations of interacting galaxy pairs provide a view the early stages of the merger process. VLA 21cm HI observations and H$\alpha$\ imaging provide evidence of minor-axis gas outflows, as well as the funneling of gas into the nuclei of some galaxies (Arp 270 and Arp 283). Observations are ongoing for other systems that appear to be at about the same stage of interaction as these pairs. Comparisons are made between the near-infrared and HI, as well as optical and ROSAT PSPC observations in order to understand further this type of star formation in colliding systems.
