Listening CODE 1 code 2 CATEGORY No.
  O = orange first letter of author's last name Toddler board books 31
  O= orange - seasons/holidays name of the season/holiday Picture books - seasonal  
  G = green first letter of author's last name Picture books - basic  
  P = purple first letter of author's last name Picture books - advanced  
  P/FT = purple/folk or fairy tale first letter of author's last name    
C   first letter of author's last name Picture book with cassette  
CD   first letter of author's last name Picture book with CD  
V   first letter of author's last name Picture book with video