The letters written by Shinran around this time were later compiled into the books of "Mattosho" (compiled by Jukaku) and "Shinran Sho'nin goshosokushu" (compiled by Zensho).
この頃の書簡は、後に『末燈抄』（編纂従覚）、『親鸞聖人御消息集』（編纂善性）などに編纂される。