Ahhhh - an Incredible String Band question!!
Cold February is a great song. Just listen to Robins whistle playing on it on the Hard Rope and Silken Twine album. Spine-tingling stuff.
After a quick strum along, here are the chords I came up with. Dont think they are too far out.

GCDD
AmEmCC
GCDD
AmEmCG
BmCDEm
BmEmCAm
GCDD
AmEm(2nd verse G)CG

Hope this is of some use,
John