His family continued the ranching operation , which still exists .
Silveira , the founding president of Marin Dairymen 's Milk Co. Ltd. aka Marin - Dell , died in a ranch accident in 1937 .
Silveira 's family continued the ranching operation , which still exists .
Silveira , the founding president of Marin Dairymen 's Milk Co. Ltd. aka Marin - Dell , died in a ranch accident in 1937 .