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Bontoc Igorot Dwellings
http://www.univie.ac.at/Voelkerkunde/apsis/aufi/pop/bontoc-d.htm
1905 pictures of houses.
Natonin, Mountain Province
http://www.whoa.org/64/hills/04.html
Here are 1963 pictures of Natonin from Bruce Hill's Class of 1964 (Wagner High Online Alumni).