Dinosaur time /
by Peggy Parish ; pictures by Arnold Lobel
- London : Harper Collins Publishers 1974.
- 30 p. : col. ill. ; 22 cm.
- I can read! : begnning reading 1 .
A city of Whos on a speck of dust are threatened with destruction until the smallest Who of all helps convince Horton's friends that Whos really exist.