This was a period in history when Israel was going out of their way to keep on good terms with it's newly found friends in Africa, and it is rather suprising that such a book would be published. In this same period, the children song כושי כלב קט Kushi Kelev Kat, was censored from Israeli Radio.
The book contains a blatant mathematical error. It illustrates in pictures and verse the story of ten little niggers who went for a stroll, one was lost, and nine remained, one was blown by the wind, eight remained.... and at the end it states : "כושי אחד נשאר אז/ עצוב היה נורא/ שמע דפיקה בדלת/ חזרו העשרה"! One nigger remained, it was terribly sad, he then heard a knock on the door, and all ten returned! We somehow ended with 11, when we started with just 10.