I looked at the Bok lyric sheets for both the LP and the CD and I listened to the CD. I could not find any other singing parts than the ones that appeared with the link above. The differences between Bok's version and the link version are minimal as a couple examples will show.

Bok - Wind snatches off north-by-east; "I'll freeze you." Kagan says, "I'm not afraid of cold." But Kagan is afraid. He doesn't know what to do.

Link - The Wind snatched off North by East. "I'll freeze you." "I'm not afraid of cold." But Kagan was afraid. He didn't know what to do.

Bok - And there was a seal lying with him there, curled over him like a blanket - and the snow was upon the seal.

Link - And there was a seal, lying there with him, curled over him like a blanket, and the snow was upon the seal's back.

rich r