The photo of Car #13, an Alfa Romeo JK with Mįrio Olivetti (Pilot #7) standing beside it, was taken at the Circuito de Petrópolis in 1961; Id connect them to Place #4, Belvedere of Petrópolis.
Place #4 seems to be a link in another thread as well: on 24 September, 1933, Roberto Marinho (Pilot #2) set a speed record in his Voisin C20 Coupé (Car #1) at the RioPetrópolis road race.
The inaugural race at Place #2, Circuito da Praia de Botafogo, was held on 17 June, 1956. Overall winner was Car #9, a Ferrari 225S driven by Arthuro de Souza Costa. Could he be Pilot #4?