Anyone interested in how American modernist magazines were read (and why they were read) in Spain would enjoy a piece by a renowned scholar and translator in the 1910s and 20s, Enrique Díez-Canedo. He contributed a long review to Ortega’s Revista de Occidente in 1925 called ‘El país donde florece la poesía,” and it only takes high school Spanish to get through all the important parts of it. Among the reviews he review are: Poetry, Little Review, Others, Contemporary Verse, The Quill, The Lyric West, Palms, and Interludes. It’s fascinating; he sees some figures whom we know as famous as being important, others as even more deserving of praise whom we mostly ignore (Waldo Frank is in the latter camp, for one).
In Rev de Occ VII:21 (Feb. 1925): [sorry, lost the pg #s, somewhere around 357-62.] Most university libraries will have this journal; if not, it’s available bound through ILL. It was easily the most influential Hispanophone review of the 20s and 30s.