When Mother Lets Us Cook (1919) by Constance Johnson. Archive.org lists both of their holdings for this title as 1908, the year of original copyright, although one has latest date as 1916 and this has 1919. Both copies have a typo for the Blueberry Muffins receipt (pg. 51). The ingredient summary lists one egg, while cooking instructions give two eggs. I've made them both ways: either way works.