The crossword solution for the term 'IT'S NORTH OF CALIF.' is ORE, which is a three letter word. ORE is a type of rock or mineral that contains valuable metals, such as iron, copper, gold, and silver. It is often mined for these metals and used in various industries, such as construction and manufacturing. ORE is found in many places around the world, including North America, where it is found in California and other states.