¹²CO line channel maps towards G190.9−2.2. The brightness scale is antenna temperature T_A in K, and the resolution 1′. Three thick white-on-black contours traced at 100, 150 and 200 mK delineate the total power appearance of G152.4−2.1 at 21 cm. Extended HISA is contoured with thick pure white lines (level −20 K below the mean T_B level of each H i channel), and H i emission at 6 and 9 Kelvin (above the mean of each map) is shown with the thin black contours. In channels with v_LSR = +4.3 and 5.1 km s^-1 molecular gas is seen bracketing the SNR’s east and west boundaries, and curved shell-like atomic gas clouds bracket the north and south boundaries.