I think Jamie suffered something that made it so she could never trust enough to love somebody. I've always thought she sufferes some sort of sexual abuse, maybe something to do with her father. Maybe her father lived and died in a "land" of his own anger and abuse, and dragged his daughter into that land.
I think Peter Yarrow intended to open the song to a million interpretations. I suppose he lived in his own land of confusion at the time. Not long afterwards, he was arrested for taking sexual liberties with two under-age female groupies.
As for "Album 1700," it's #1700 in the Warner Catalog - no deep meaning, just kind of a private gag.