Closest I've found is "medicine cards " which liste a lot of animal symbols based on native American beliefs. The credibility of their sources is questionable, though. Other than that it just depends on what you can find from each tribe. Not all tribes have the same lore after all.
"Sometimes you will act as an angel to others, perhaps without even realizing it. One day a woman comes up to you and says 'You saved my life'. You look at her astonished, trying to remember the last time you even saw this person before, the meeting meant so little to you at the time. 'Don't you remember? I was standing on the bridge, staring at the water, and you passed and said 'Good morning'.'".