I hope this helps:

C - x32010
CMa7 - x22010
Am - x02210
C/G - 3x2010

Hobo's Mandolin Michael Smith

This here C mandolin;CMa7 well it's Am carved out of C/G pine,
It was Dm willed to me by an old hobo,G way down the line,
He do Dm nated this mandolin with G these last words:
"Be Dm fore I cross over, Boy, I'll G show you some chords.
This here C mandolin's CMa7 made out of Am earth and of C/G stone:
If the Dm sound of the railroad makes you G feel all alone,
This here Dm mandolin will take a G hobo back C home. CMa7 Am C/G

This here C mandolin CMa7 is Am sure full of C/G sand,
It'll Dm play out-of-tune if there's a G cop on the train,
She'll Dm sing you the song of the G Silver Chief out of St. C Paul
And CMa7 that ain't Am all. C/G
This her C mandolin'll make a CMa7 young girl Am open her C window
Like a Dm warm breeze on a G rainy night,
Dm Like a hex-sign on a G barn,
This here Dm mandolin will keep a G hobo from C harm. CMa7 Am C/G

I'll let you figure out the last verse:

This here mandolin is made out of barns and old watertanks,
If the jukebox is busted and you need an old song,
This here mandolin'll take a hobo back home.