[Se ha respetado la grafía del original]
New York, 30 de diciembre de 1929
Muy querido hermano.
Acabo de llegar; no me he acostumbrado todavía a mi propio país ni a la vida humana que encuentro aquí. Me es difícil hablar, y escribir. Ya está empezando el proceso de digerir todo lo que me ocurrió, todo lo que he aprendido en su América. Voy a dedicarme a esta tarea, y a la de escribir el libro que debe ser el fruto de mi viaje, y justificarlo, enseguida. Una tarea honda, larga, dificilíssima. Todo el año 1930 no bastará, tal vez, a acabarla. Felizmente, he ganado bastante dinero para poder esconderme lo necesario, y para dedicarme sin interrupción a la obra. Procuraré hacer un libro constructivo —un libro de vida y de acción.
Querido José, no sabes —no puedes saber cuánto mi conocimiento con ti me vale— y me nutre. Es el “climax” de mi viaje. Cuando mi solitaria vida aquí me asuste demasiado, pensaré a ti, a tus amigos, a este conjunto hermoso que tu espíritu ha creado en el Perú. Mientras tanto, he escrito dos veces a Glusberg, diciéndole la importancia de lograr tu visita a B. A.—la importancia verdaderamente americana. Y he escrito lo mismo (dos veces) a Victoria Ocampo, quien podrá tal vez ayudaros. Ella se marchó a París: pues mi comunicación con ella, cuando llegue ella, no será tan larga.
No puedo escribir una verdadera carta: como he dicho, me es necesario el silencio. Esta vuelta al Hecho Americano, después de mi gran viaje en el país de las ideas, es penosa, naturalmente. Comprenderá, como entiendes todo.
Know, dear friend, that in the deepest sense you are my brother, and that you have my love (also in the deepest sense) forever.
Mis cariños a Sra. Mariátegui, a Leguía (el bueno), Sánchez, a Sabogal, a Julia, a todos, a todas... Qué recuerdo maravilloso me han dado, para siempre.
ti hermano
Waldo Frank
Los envíos no me han logrado —ni cortes, ni libros.
Jan. 12.
P.S. 12 de enero. Mucho trabajo en dos semanas! Ya tengo el plan de mi libro sobre América hispana. Esto me espantó lo más —crear una forma que articulara la complejidad viviente de Hispano-América, en sus facetas de cultura moderna, americana y mundial. Creo que esta primera etapa de la obra ya existe. Voy a dar todo el año 1930 (a lo menos) al libro.

Yorktown Heights, New York, 30 de enero de 1928
Señor Don José Carlos Mariátegui,
Lima, Perú.
My dear Brother,
I learn vía Buenos Aires of your illness, of your political difficulties and of those of Amauta: and I hasten, at this late date, to send you my profound good wishes. There is a vast silence between New York and Lima, and yet at times I seem to see you and to hear you across that abyss, crearly and warmly. I wish that you could know what help in my own struggles your own career has given me: I want you to realize that in a very true sense we are close despite the silence between us.
Glusberg writes me that he is cooperating through you and Señor Garro for the translation of Our América & Holiday: I am eager to hear details about this work. If it is being carried on under your personal supervision I have confidence in the result; and although I can realize that you have little time I hope that you are managing to keep an eye on the progress of the undertaking. As you may have read, there seems to be a strong desire in Buenos Aires to have me come down there to deliver some lectures— : and since this will be a means of representing to South America the North America which has no voice in Pan-American conference and the like, I am strongly tempted to go despite the sacrifice of time which such a journey would entail. It is possible that I may decide to make the trip, this coming Autumn. In that case, I should like to know if I might not cross over to Peru. I should hate to be so near (comparatively) to your America, without getting to know it, and getting to know you, also. If I do go to B.A. in the autumn, will you let me know (as soon as you possibly can) how much of a journey in days and in expense it would mean to cross the Andes, and if there would be some means, in Peru, of earning enough money at least to defray the cost of such a voyage? If you can possibly let me have word, before the end of March I shall be grateful.
I have recently received books of poetry from fellow Peruvians of yours: I have had no time yet to read them, and hence have not written to the poets. Will you tell them (if they are your friends) that my silence means merely that I am frightfully rushed, and that I shall get to them, before very long?
I am sending you the New Republic, in which my new book (the continuation of Our America) called The Rediscovery of America is appearing. Do you receive it?
I am eager to hear from you, my friend: to hear above all that you are again in good health, and working; and, if possible, to learn what the exact difficulties are under which Amauta and you have been laboring. I suspect that these difficulties are political, and you must know from my own work that I am close to you —in your Camp, in that matter (although I have no exact political affiliations).
I send you my brotherly greetings. The thought that there is even a bare chance of seeing you in Peru excites me.
Waldo Frank