I am in the process of updating my posts to include when available, Lexile level, number of pages, and the ages for which the book is appropriate. So far, only about 1/2 the books I've looked up have had a Lexile measure. On many of the picture books you will notice that the Lexile number is preceded by the letters "AD," meaning Adult Directed. Many picture books are usually read to a child, rather than the child reading them independently. Although seemingly easy reading, some picture books actually have pretty high Lexile measures, and could present a challenging independent reading experience to an age-appropriate reader. However, an adult may want to initially read the book along with the child.
I hope these additions make "Miss Laurie Found a Story!" a more helpful tool in your search for quality reading material for your child.