Wisps location (Kanto) :
Inside the safari zone-
R2-
R4-
R8-
R9-
R13-
R16-
R17-
R21 (surf)-
R 22 (go all way left from viridian ) -
R23 (south of indigo plateau) -
R24
Viridian forest
Rock tunnel
Mt. Moon-
Berry Forrest
Treasure Beach
Pokemon mansion-
Route 12 on water -
Route 11 top right corner-
Powerplant (go all way through)
Kindle road
inside seafoam (where you find articuno, need strength)
Cape Brink