These are 2 traditional/vintage readers by Mabel O’Donnell, reprinted, hardcover. They are both included in this bundle.
They are newly reprinted traditional readers and the final ones of this series (that we’re aware of).
Grade 4: Singing Wheels 384 pgs
Grade 5: Engine Whistles 284 pgs
(Note: Alice and Jerry readers are more expensive in comparison to the Canadian Reading Development series.)