It's the Great Pumpkin, Charlie Brown - Charles M. Schulz

I love Charlie Brown books.  They are instantly recognizable characters to most students, and the books are easy to read independently.  It's the Great Pumpkin, Charlie Brown  would be a good read aloud right before Halloween, or it would be a great center for reader's theatre or student recording.  Both of these centers promote fluency.  This is appropriate for grades 1-3.