R-234 is listed as a Junkers Ju 22 "Parasol Biplane" but this illustration of the unmarked aircraft shows it to be a monoplane. Does anyone know more?

Самолёты на фотографии: Aircrafts on the photo: Junkers T 21 / Ю-21 / J 22 / T 26 - ГерманияGermany - 1923

Stinson model SR c/n 8713 as R-240

Самолёты на фотографии: Aircrafts on the photo: Stinson Reliant - СШАUSA - 1933

Waco RNF c/n 3420 was registered R-247.

Самолёты на фотографии: Aircrafts on the photo: WACO F / A Series / PT-14 - СШАUSA - 1930

DH Puss Moth R-258 was one example that was positively identified, being c/n 2042. The original marks G-AAZM can be seen clearly beneath the crudely-painted 258 on the fuselage.

Самолёты на фотографии: Aircrafts on the photo: De Havilland Puss Moth / D.H.80 - ВеликобританияUnited Kingdom - 1929

The French airline Aeropostale operated within South America, otter retaining French marks on their aircraft. This Potez 29-2 F-AIVX eventually became R-253 and later R-299.

Самолёты на фотографии: Aircrafts on the photo: Potez Potez 29 - ФранцияFrance - 1927

Kellet K-2 autogyro R-237 at Buenos Aires still wearing its US registration NC11668.

Самолёты на фотографии: Aircrafts on the photo: Kellett K-2 / K-3 / K-4 - СШАUSA - 1932