We're often asked, "is it teepee or tepee?"  You'll see tepee everywhere, but "popularity is only of temporary moment ... a vulgar struggling for supremacy" (Chamber's Edinburgh Journal, 1849).  Indeed, California's Wigwam Motel (on both the historic registry and alongside the ghostly vestiges of Route 66) spells it teepee.  That's surely definitive.  For further proof, we offer our own graphical evidence (heehee).