Mm, I'd like to know too.
I'm using Immigrants at Central Station, 1951 and Feliks Skrzynecki as my poems.
I'm attempting to relate them to The Road Not Taken or The Wind in the Willows.
My link is so vague that I haven't even thought of it up until this post. Go me.
On the spot though, I'll say that... both Immigrants and Wind in the Willows are set before the journey? Juxtaposing feelings of apprehension and excitement. Maybe... mixed feelings upon embarking on a physical journey?
Since The Road Not Taken is based on decisions, I guess I could integrate the decisions of Peter that are based on the role model of his father?
"Watched me pegging my tents/ Further and further south of Hadrian's Wall," could directly relate to The Road Not Taken as Peter's decision to drift away from his Polish decent is a decision he cannot repeat?