I found this list on the UIUC's website. The list is quite extensive, including almost every make and model of aircraft I can think of.
http://www.aae.uiuc.edu/m-selig/ads/aircraft.html#helicopters * Site was moved *
I've clipped out the piece for the Bell helicopters below. In my own work, I have already identified that the tip airfoil of the Bell 212 is not exactly NACA0006, because the outboard 80% is modified by inserting a wedge at about 25% chord to produce a "camber". I would theorize that this has something to do with autorotation, but I quickly get out of my depth.
Bell 200 XV-3 (2 blade rotor) NACA 0015 NACA 0015
Bell 200 XV-3 (3 blade rotor) NACA 23015 NACA 23015
Bell 204 UH-1 NACA 0015 NACA 0015
Bell 205 UH-1 Iroquois NACA 0012 NACA 0012
Bell 205 UH-1 (new blades) Bingham 12% Bingham 8%
Bell 206 OH-4 NACA 0011 mod NACA 0011 mod
Bell 206 OH-58/TH-67 NACA 0012 mod (11.3%) NACA 0012 mod (11.3%)
Bell 209 AH-1 Cobra NACA 0009.3 mod NACA 0009.3 mod
Bell 209 AH-1 (K747 blades) Boeing VR-7 Boeing VR-8/-9
Bell 209 AH-1J Sea Cobra Wortmann FX 69-H-098 Wortmann FX 69-H-098
Bell 212 UH-1N NACA 0012 NACA 0006 ("droop snoot")
Bell 214A Wortmann FX 69-H-098 Wortmann FX 69-H-098
Bell 214B Wortmann FX 69-H-098 Wortmann FX 69-H-098
Bell 222 Wortmann FX 71-H-080 Wortmann FX 71-H-080
Bell 249 Hueycobra Boeing VR-7 Wortmann FX 69-H-080
Bell 292 ACAP Wortmann FX 71-H-080 Wortmann FX 71-H-080
Bell 301 XV-15 (Boeing ATB) V43030-1.58/VR-7 Boeing VR-8
Bell 301 XV-15 (original blades) NACA 64-935/528/118 NACA 64-(1.5)12/208
Bell 406 OH-58D Kiowa Boeing VR-7 Narramore 8%
Bell 406LM BHTI M406183 BHTI M406183
Bell 407 Boeing VR-7 Narramore 8%
Bell 409 YAH-63 Wortmann FX 69-H-083 Wortmann FX 69-H-083
Bell 412 Boeing VR-7 Wortmann FX 69-H-080
Bell 427 Boeing VR-7 Narramore 8%
Bell 47G-2 H-13G wood blades NACA 0017 NACA 0011
Bell 47G-2 H-13H metal blades NACA 0015 NACA 0015
Bell 47J HUL wood blades NACA 0016 NACA 0012
Bell 47J H-13J metal blades NACA 0015 NACA 0015
Bell 48 YH-12 NACA 0018 NACA 0012
Bell 54 XH-15 NACA 23017 NACA 23011
Bell 61 HSL high twist NACA 0012 NACA 0012
Bell 61 HSL low twist NACA 0018 NACA 0012
Bell-Boeing 901 V-22 Osprey XN28/XN18/XN12 XN09
