Average Nanten/Columbia CO(1-0) (Matsunaga et al. 2001; Dame et al. 2001) data within circular regions encompassing HESS J1534−571 ([l,b,r] = [323.70, −1.02,0.4]), HESS J1614−518 ([l,b,r] = [331.473,−0.601,0.42]), and HESS J1912+101 ([l,b,r] = [44.46, −0.13,0.49]). HI data are also shown for all sources (SGPS/VGPS McClure-Griffiths et al. 2005; Stil et al. 2006), while GRS ¹³ CO(1-0) and CS(2-1) (Jackson et al. 2006) data are shown for HESS J1912+101. The CS(2-1) feature at 9.5 km s^-1 in the bottom image is likely an artifact caused by an offset in one frequency channel.