Now, my digging turned up videos, biographies and discographies by another Winterhawk, or what I presume is another band by the same name (from Chicago) because the band members are totally different. Even website info seems confusing and seems to mix up the discographies. The Native American band Winterhawk is from San Francisco and does not have an official website, or much info really, but the members were:
Nik Alexander (vocals, guitar), Frank J. Diaz de Leon (bass, vocals), Alfonso Morris Kolb (drums), Frankie Joe (guitar), Jon Gibson (drums, vocals), Doug Love (bass, vocals)
I don't have the CD anymore, but I do remember the songs and thanks to YouTube, I am able to share some from the right band, although their best stuff (Loser, Crazy, We are the People, Warrior's Road) is not on there. Too bad they lack exposure and that even with the best technology you can't always get what you want.
Winterhawk - Restaurant (Electric Warriors - 1979)
Winterhawk - Selfish Man
Winterhawk - Black Whiskey