Standard (EADGBE)

I was 18 my brother was 21

One saturday evening when all the work was done

We went down to the river we had some lines to run

My brother Walter Had a fight the week before

Knocked a boy named wilson through the pool hall door

They say dont mess with wilson, unless you want a war

We put the boat in the water, and we made that engine run

Loaded up the lantern against the sinkin' sun

And my brother Walter, was loading his gun

And we went down the river

I hope it sounds ok, I figured it out by ear. I dont know if it's 100% or not.