Kidman, 1631 : a new almanack and prognostication for the yeare of our Lord God 1631, being the third from the leap yeare, and since the conquest by Duke William 565 : calculated and composed according to the rules of art for the meridian and latitude of Saffron-Walden in Essex, the pole there elevated 52 degrees above the horizon, and may without sensible errour serve any part of this kingdome of England.