The one constant through all the years, Ray, has been baseball. America has rolled by like an army of steamrollers. It has been erased like a blackboard, rebuilt and erased again. But baseball has marked the time. -- Terrance Mann (Field of Dreams)
However, as a guideline in how to build up innings in an arm, it seems like a pretty good template to follow from the low minors up thru a pitchers major league prime.