SIMBAD references

We present 21-cm observations of four Galactic globular clusters, as part of the on-going Galactic Arecibo L-band Feed Array (GALFA) Hi survey at Arecibo. We discovered a peculiar Hi cloud in the vicinity of the distant (109 kpc) cluster Pal4, and discuss its properties and likelihood of association with the cluster. We conclude that an association of the Hi cloud and Pal4 is possible, but that a chance coincidence between Pal4 and a nearby compact high-velocity cloud cannot be ruled out altogether. New, more stringent upper limits were derived for the other three clusters: M3, NGC5466, and Pal13. We briefly discuss the fate of globular cluster gas and the interaction of compact clouds with the Galactic halo gas.