A sample of more than 150 redshifts, the majority new, is presented for galaxies brighter than m/sub p/=15.8 mag in a 28 square degree field in Hercules containing the clusters A2151, A2152, and A2147. This sample populates a 60000 Mpc/sup 3/ conical volume. It contains a supercluster centered near V/sub 0/=11000 km s/sup -1/, a large void of depth approximately 100 Mpc in front of the supercluster, and foreground structure at 4700 and 2300 km s/sup -1/, the former associated with Seyfert's sextet. (23 refs)