Inside Cover of "Here Come the Tuckers"

Originally uploaded by myredtie
This is the inside cover of the book. As a little kid I used to spend a lot of time looking at the pictures of the perfect nuclear family with the pretty mom, the handsome dad, and the well dressed children. As an adult, I just now realized that according to the story there were actually three daughters and one son. Huh! I wonder why they chose to only show the perfect two child (one boy, one girl) family on the inside cover?