The first two prayer books during Edward VI's short reign created the foundation of the reformed Anglican liturgy. While important differences exist between the 1549 and the 1552 books, it is helpful to study how vastly different both are to the pre-reformation Sarum MIssal.  By closely reading and discussing each of these eucharistic texts, we can better understand the trajectory of Cranmer's thought, and better appreciate the theology associated with the Anglican prayer book heritage, through 1662 to the present day.