The original sheet music can be found at The Lester S. Levy Collection. Dale Rose posted the lyrics in 1998, but since they're buried in a thread with an unrelated title, I think it's appropriate to repeat them here:

THE OLD DOOR STEP.
Words by A. J. Crider. Music by Geo. B. Chase.
Creston, IA: Dr. J. W. Graves, 1880.

In Mudcat MIDIs:
The Old Doorstep (vocal line)
The Old Doorstep (with piano part and harmonies)

1. I stand on the doorstep at eventide now.
The wind whispers by with a moan.
The fields will be whit'ning but I will be gone
To roam o'er the wide world alone.
I stood on this doorstep when school time was o'er
And longed for the time to go by,
And now it has gone, and I stand here tonight,
To bid this dear stepstone goodbye.

CHORUS: Goodbye to this stepstone. Goodbye to my home.
God bless those I leave with a sigh.
I'll cherish dear mem'ries when I am away.
Goodbye, dear old stepstone, goodbye.

2. It is hard to be parted from those that we love,
When reverses in fortune have come,
And the strongest of heartstrings are broken in twain
By the absence of loved ones at home,
But I'll bid this poor heart cease repining in vain,
And hush'd be each deep heaving sigh,
Tho' the pain it will cost me none ever can know,
To bid this dear stepstone goodbye.

3. There are many temptations with which I may meet,
And sad mournful scenes every day,
And the faces at home, oh! I never shall greet,
Their forms will be so far away,
But I'll think of the dear old stone step at the door,
And oft drop a tear from my eye.
I will stand in my dreams as I stand here tonight,
To bid this dear stepstone goodbye.