A survey of the J = 1→0 2.6 mm transition of CO covering 11.5 deg2 toward the Taurus dark cloud complex is presented. The area includes Heiles Cloud 2 and DL 2. The main finding is the presence of systematic velocity structure in the Barnard 18 region of DL 2. The authors tentatively interpret this structure as an expanding shell of molecular gas of diameter ≡3 pc centered on a cluster of young T Tauri stars. The estimated momentum of the shell is consistent with that expected from winds from the young stars seen in the shell.