Jon,You all call this a Mormon Song with good justification. But to me it is another "Insect Song". I would suggest that since the "winter of '49 had passed" that the song actually refers to the summer of 1850 which puts its historical accuracy off by 2 years.
Here's 2 more verses that fit in the middle of the song.
".....courage and fight to win"
With the thrill of life, the tender shoots
Burst forth from the virgin plain;
And each day added its ray of hope,
The blessing of ripened grain.
"But lo in the eaststrange clouds.........Its course on the Mormon host.
With a vigor that desparation fanned,
They battled and smote and flew,
But the clouds still gathered and broke afresh
'Til the fields that waved were few.
"With visions of famin....."^^