Kol Yaakov is a collection of laws related to the scribing of holy texts, such as tefillin, mezuzot, Torah scrolls, and megillot. Written in Baghdad around the beginning of the 20th century by Rabbi Yaakov Chaim Sofer, it is organized according to the Shulchan Arukh to facilitate cross-referencing, and includes specific traditions of the Baghdad community, in addition to other widespread details of Jewish law. A second edition was printed in the author’s lifetime with additional material on the production of tefillin and mezuzot, such as kabbalistic kavanot (intentions) to accompany each stage of the scribal process.