A few links that I have come across doing my research over the years.
Some you might have to use google translator to make it easier for yourself.
There was a book also published called - Puma: Types and History By Thomas H. Braun
Very usefull forms
http://www.thesamba.com/vw/archives/lit/safermotoring.php - (October 1972)
http://carros.mercadolivre.com.br/antigos-puma/ - Like AutoTrader
Shops with Puma Parts
List was updated and checked 13/05/2017