Abstract: One of the types of gravitational-wave (GW) signals targeted by modern ground-based GW detectors is a stochastic (random) background of gravitational waves. In addition to the efforts currently underway to search for such a signal by cross-correlating the outputs of a pair of interferometric detectors such as those at the two LIGO sites, cross-correlation measurements are also being conducted between the LIGO Livingston interferometer and the ALLEGRO resonant bar detector only 40km away. I will describe this research and some of the challenges and benefits inherent in this sort of bar-interferometer correlation experiment.