Approx 1948 Brasil Brazil Airliner...what is it? Taildragger?
The airliner in the picture is a Vickers VC.1 Viking, registration LV-AFI, of the former Argentinian operator Flota Aérea Mercante Argentina.

According to this source, the plane served the 
Secretaría de Aeronáutica under registration LV-XFJ for less than a month, from 10.9.1947 till 4.10.1947 before transferring to FAMA.

After FAMA, the plane in question served Fuerza Aérea Argentina from 4.5.1949 till 11.11.1951 under registrations T-80 and T-50.

Wikipedia: Vickers VC.1 Viking

Wikipedia: Flota Aérea Mercante Argentina (in Spanish)