Ho-Hum, story by Patricia Lynn, illustrations by Jack and Louise Myers.   Copyright 1957, published by Whitman Publishing, Racine Wisconsin, and printed in the U.S.A..   Hardcover book, 6 1/2" x 5 3/4" (165mm x 146mm) , 28 printed pages.  The book is from the Tell-A-Tale Books children's book series.

"Ho-Hum" is a 1957 children's book written by Patricia Lynn and illustrated by Jack and Louise Myers. The story follows a young boy named Benjy who visits the zoo with his parents. As they explore, Benjy becomes increasingly tired and begins to yawn frequently, saying "Ho-Hum." His yawns are so contagious that the zoo animals start falling asleep one by one. The narrative reaches a climax when they encounter a hippopotamus, whose enormous yawn surpasses all others. 

The book's covers have some wear along the spine and on the corner tips (see photos).  The inside pages are in very good condition.