G. A. Henty 
Out on the Pampas – Or, The Young Settlers 

"On The Pampas The Young Settlers" is the fourth adventure novel by eng writer G.A. Henty. The reader accompanies young engmen who leave their home country to go Argentina with their families. They have to endure many adventures at the time of the Mexican – American War including a raid by the Pampas Indians in which their sister is abducted. They rescue the girl, make peace with the Indians, and return prosperously to England.