found out I had already posted many old brazilian city photos at this thread
http://forum.skyscraperpage.com/showthread.php?t=161713
some from Porto Alegre I had posted there:
all pics from the private archive of Gilberto Simon, owner of the site
www.portoimagem.com
http://www.portoimagem.com/fotos-ant1.html
1953
1953
1954
1955
1964
50s
50s
50s
50s
50s
50s
50s
50s
50s
50s
1953
30s
1948
1935
1935
1934
1935
1940
1938
1944
1940
1940
1940
1939
40s
1945
40s
flood of 1941, the worst in the history of the city