Reddit reviews A Test of Poetry (The Wesleyan Centennial Edition of the Complete Critical Writings of Louis Zukofsky)
We found 2 Reddit comments about A Test of Poetry (The Wesleyan Centennial Edition of the Complete Critical Writings of Louis Zukofsky). Here are the top ones, ranked by their Reddit score.
Used Book in Good Condition
A Test of Poetry by Louis Zukofsky. Dense, but a must once your on your way a bit.
https://www.amazon.com/Wesleyan-Centennial-Complete-Critical-Writings/dp/0819564028
Off the top of my head...
Pound's Literary Essays
Zukofsky's A Test of Poetry
Ciardi's How Does a Poem Mean
... have all been useful to me. Otherwise, since there are particular poets you're interested in, you should definitely check out any (auto)biographical books that may be available.
For the record, if you haven't already read him, I'm a big Louis Zukofsky fan; given your list, I think you'd like his stuff. "A" is probably my favourite poem generally, and they very recently released the new edition of it. Part 9 (if I remember correctly) is composed of quotes from Das Kapital and he has some very significant Marxist influences. If you're interested in reading up on Marxism, too, I can recommend some excellent critical books - although, as it stands, Schumpeter's Capitalism, Socialism and Democracy is really good general view of things.
Hope this helps!