Wing, Natasha. 2009. The Night Before St. Patrick's Day. Illustrated by Amy Wummer.
This is a rather fun seasonal title by one of my favorite authors, Natasha Wing. As you can guess from the title, the book is a play on the poem "The Night Before Christmas." Can Tim and Maureen trap a leprechaun and trick him into revealing where his golden treasure is? Or will the joke be on them? Read and see for yourself.