Petrópolis (Brazil), houses and buildings

Petropolis, Brasil [Brazil]. 18 Sept 1949. Plus X p Trop - Rio. More of Petropolis - business center. Alt. about 800 m. There is said to be a temp. gradient of 1 degree C @ 160 m between Rio & here. 8 1/50 GGrayscalePendleton nitrate negative, Box 317 of 38