There was an article on stree elephants in the October 2005 issue of National Geographic on elephants in Thailand. I was appalled to read about how they were trained. Hopefully, next time we're in Thailand we'll be able to visit one of the elephant conservation farms:
1. Elephant Nature Park in Chiangmai run by Sanduen Chailert seems to be the most likely one
2. Pattaya Elephant Village
3. Thai Elephant Conservation Center near Lampang in the north but south east of Chiangmai
4, Chiang Dao Elephant Training Camp near the Myanmar border
The article also talks about the long lives of the elephants and it reminded me of an Indian movie from my younger days: Haathi Mere Saathi.