No particular Coyote tale is especially widespread, which is consistent with a few centuries of each tribe separately developing its own particular Coyote mythos. Unfortunately, it also means we don't know which Coyote stories are of particularly great age; all we know is what ones are part of the oral tradition at the time various folklorists collected them. This one, collected by Mary Magoulick in the Upper Peninsula of Michigan, seems to rely on the audience already being aware that Coyote is not to be trusted, so it's probably not the oldest, but it could still be very old. We wouldn't know - that's the difficulty of studying the history of peoples without written records.
Here, then, is a Coyote story, in the words of Ogimakwe, a woman of the Nishnaabe tribe. I've removed an aside or two and a couple of Magoulick's notes on Ogimakwe's precise pronunciation, but otherwise, the story is unedited, exactly as told.
This little boy was out wandering around.
And he was,
he heard the sound of the whippoorwill,
the song of the whippoorwill,
which was really beautiful.
So, he was out wandering around looking for the whippoorwill.
And he walked on this particular path,
And he came along coyote
who also had a very nice song
And coyote said to the little boy
"Why are you following me?"
And the little boys says,
"Well, I've been listening to,
all day, you know, evening,
to the sound of the whippoorwill
And I want to find out where he's at."
And coyote says,
"Don't you like my songs?
I sing too."
And he reared his head back and howled out of tune
The little boy covered his ears and he said
"Well that nice, but
I would really like to go find and listen to the sound of the whippoorwill."
So the coyote, being as cunning and as crafty as he is, said,
"Well, I know where he sings,
So follow me."
So the little boy followed him.
And the coyote went through some thick brush,
and the little boy fell down and got skinned up and
the coyote's running,
"Come on! Come on! Hurry up! Follow me!"
Then he went off here,
and he went through some thorns, and, and
fell down again, and
It's starting to get light.
And when he finally reached the place where the
whippoorwill has been singing all night
the whippoorwill was gone.
And he could still hear the coyote howling off in the distance.
So the little boy wandered home,
all cut up
skinned up knee,
and as he became an older, wiser man,
he realized that there are many paths in this world,
And there are many ways to get in to what you truly love,
But you should always stay true to your path,
no matter what,
and always keep an eye out for coyote.