York Thomas : A practical treatise of arithmetick : shewing without the help of a master; a plain and easie way of working upon whole numbers and fractions. As also of readily managing the rule of three, and the other rules depending thereupon / by Tho. York.
Yorke Lynda : Late quaternary valley fill sediments in the River Tyne Valley : understanding late Devensian deglaciation and early postglacial response in Northern England.