Justice, in his essays, shows a curious specificity & exactitude. I mean the lit-historical events are there, to be pinpointed. Thus, in his essay on free verse, he notes not only the poet, but the specific poem, where it all began (in 20th cent. America, that is). The poet is Pound, the poem is from 1907:

Lips, words, and you snare them,
Dreams, words, and they are as jewels,
Strange spells of old deity,
Ravens, nights, allurement:
And they are not;
Having become the souls of song.

In his Stevens essay, he pinpoints particular lines which document the poet's careful & gradual opening-up of iambic blank verse; & how he does it (anapests...)

Not to be polemical, but I'm sort of tempted to turn my attention away from free verse for a while. It would make things both easier & more difficult. For one thing, I'd have to turn away from a lot of my own poetry. On the other hand it would allow me to block out a lot of sub-literary noise.