Dr. Seuss™ Cat In The Hat™ Numbers 1-20 Posters. Learn to count and increase number recognition skills with these fun Dr. Seuss™ posters! Featuring illustrations from the world of Cat In The Hat™, this set helps reinforce counting skills and how to spell each number. Also includes strips with the written number words in Spanish. Separate the 17 1/2" x 28" panels into individual sheets.™ & © 2007 Dr. Seuss Enterprises, L.P. All Rights Reserved.