I See Rectangles, written by D.H. Dilkes, has been published.
Are there rectangles to be found at school? Emerging readers learn about common things shaped like rectangles in their schoolroom while practicing basic reading.
Written for Pre-K and beginning readers. Guided Reading Level: B. 24 pages, full-color photographs, Enslow Publishers, Inc.
ISBN 13: 978-0-7660-3801-1
Paperback: 978-1-59845-152-8
Other titles in the All About Shapes series include: Ovals, Rectangles, Squares, Stars, and Triangles.
http://www.enslow.com/displayitem.asp?type=1&item=3027