Nate the Great and the Lost List by Marjorie Weinman Sharmat illustrated by Marc Simont*

My first grader read this book to himself.
While Nate is on vacation, he does not refrain from solving a case!  His friend Claude has lost his grocery list and enlists Nate to find it.  Lunch is approaching.  Will Nate solve the case in time?
*Highly recommend.
-Borrowed from the library.
Guided Reading Level: K (end of 1st grade/beginning of 2nd grade)