Laws and Regulations for All the Synagogues K'K Aschkenazim in the British Empire This 1847 book from J. Wertheimer in London outlines the laws and regulations governing the conduct of Ashkenazi synagogues within the British Empire. Written in English and Hebrew, it details prayer times, the order of services, and rules of decorum. The book comes from the library of Rabbi Dr. David de Sola Pool.