Standard Tuning, no capo. 
Intro
Am  G  Dm  Em
Am  G  Dm  Em
Am           G            Dm               Em   
Reuben had a train and he rode it down the line
Am         G         Dm     Em
Rode it to god knows where
Am       G   Dm      Em
Oh lordy me, oh lord my
Am         G         Dm      Em
Rode it to god knows where
Am  G  Dm  Em
 
    Am                  G             Dm                  Em
You should have been in town when old Reuben's train went down
          Am               G                Dm      Em
You could hear the whistle blow from miles around
Am       G   Dm       Em
Oh lordy me, oh lordy my
          Am               G                Dm     Em
You could hear the whistle blow from miles around
Am  G  Dm  Em
https://www.coveralia.com/acordes/reuben-s-train-rag-n-bone-man.php
Am               G        Dm              Em  
Reuben's down in low, hes got no place to go
          Am                  G                    Dm     Em
He's been running round those train tracks all his days
Am       G   Dm       Em  
Oh lordy me, oh lordy my
     Am                  G                    Dm     Em                   
Been running round those train tracks all his days
Am       G   Dm       Em
Oh lordy me, oh lordy my
Am  G  Dm  Em  
      Am            G               Dm            Em
So he got himself a blade, laid ol' Reuben in the shade
         Am                G               Dm     Em
Says he's going to start a graveyard of his own
Am       G   Dm       Em  - (fades out)
Oh lordy me, oh lordy my
-  
He's gonna start a graveyard of his own