The cover to Captain Marvel Adventures #83 (April, 1948) is a pretty typical cover featuring the Big Red Cheese, as many were designed to build him up as an icon. His 'proud warrior' pose is a bit ridiculous and the cape and headdress seem to be competing for attention. Many covers from the 'Marvel' group of titles feature some sort of Native American motif, but this is the only headdress one I spotted.
Here's one I actually own. The cover to Dennis the Menace #91 (July, 1967). I can't recall ever reading it, and it's buried somewhere in one of my short boxes labelled 'MISC' (not very wise on my part), but the synopsis on the GCD states "Cowboy Dennis is flustered by a real Indian". Considering that Dennis is not easily flustered, this must be as dramatic as a Dennis the Menace story can get.
What would I ever do without Rex the Wonder Dog. It seems that no matter what topic I choose to discuss, there's often a Rex cover that fits the bill. If you were to read comics in the late 40s and 50s, you would likely think that Native American tribes handed out honorary chiefdoms with abandon. The cover to The Adventures of Rex the Wonder Dog #24 (Nov-Dec, 1955) is actually a handsome Gil Kane cover with bright colours typical of that era of DC/National. Kane's snout-like noses were always a good fit for Rex.
Let's end off with the oldest one I am featuring, the cover to Four Color #112 (July, 1946). In this story, Porky Pig learns that he is a relative of Chief Pigronomo (yes, you read that correctly). There's also a plot to swindle the Native American out of their land. I find it a bit surprising that the story would tackle that theme, but applaud the effort. I may have to track down a copy of this one, but that's a story for another column.