I've compared these lyrics to the 1902 recording of Cal Stewart (on Victor), and I get (it's remarkably close to the above yranscription:

I'M OLD BUT I'M AWFULLY TOUGH

I'm a jolly old fellow way back in New England
Where apples and peaches and punkins do grow
Where the girls they are handsome, the boys they are likewise,
The same I would have you to know.
I came to your city, your sights for to see,
The town and the great public square.
I came for to ride in your 'lectric streetcars
And wink at your pretty girls there.

CHORUS:
But I'm old but I'm awfully tough, ha-ha-ha-ha-ha, he-he-he-he-he!
Old but I'm awfully tough.
And the girls they do say, "Uncle Joshuway,
You're old but you're awfully tough."
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
I'm old but I'm awfully tough.
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
Ha-ha-ha, ha-ha-ha, ha-ha-ha, ha-ha!
I'm old but I'm awfully tough.


I'm a jolly old fellow way back in New England,
A jolly old fellow, you’ll see.
At playing euch- euchre(1) I'll give you the joker
And beat you now five unto three
A jolly old fellow, my age never mellows,
Although I am near seventy-three.
Away with your brokers but give me the joker,
For a jolly old fellow you’ll see. CHORUS

                

(1) It’s a little hard to hear this line, but he may be saying an abbreviated version of “euchre-euchre.”

(2) No, I haven't counted the "ha"s.