From a letter Frank O'Hara wrote to Ashbery on July 14, 1960: "Europe is
carrying all before it, it is on everyone's lips and in their heads."
In an undated letter (from around 1960) Kenneth Koch wrote to Ashbery to
say that of all the poems Ashbery was sending over from Paris, poems
which were to form The Tennis Court Oath, "Europe" was the most
influential. Koch desperately says of this piece, "I can't seem to do
what you do. Huh! All I want to do is imitate you" (letter dated January
25, 1960).
On January 7, 1960, O'Hara says of the "long poem" ("Europe"): it is "the most striking thing since The Waste Land."