Bob Books Set 5: Long Vowels Bob Books Set 5: Long Vowels Bob Books Set 5 introduces the important new skills of long vowels and the magical silent E. Maturing readers continue to love Bob Books with their lighthearted stories and entertaining pictures. Childrens" reading vocabularies grow quickly as they finish the longer stories in eight books, 16 to 24 pages. They are proud to be ready for chapter books. Full description