I am currently reading the Adventures in the Unknown Interior of America, which is a translation of the account of Cabeza de Vaca’s voyage through North America.
It is super interesting, but what I would really like is to read the translation of Comentarios, which is his account of his epic voyage in South America. I am not finding anything in English, at least nothing I can get my hands on. My Spanish is not so good, but if there is a “modern language” version in Spanish, I could also give it a try.
There is! See Baker Morrow’s 2011 edition put out by U of New Mexico Press under the title, “The South American Expeditions, 1540-1545”.