She was 66.
Among her best-selling titles are "Junie B. Jones and Her Big Fat Mouth" and "Junie B., First Grader [at last!]"
Park and her husband, Richard, divided their time between homes in Arizona and Long Beach Island, N.J. in recent years.
"These days, Richard and I divide our time between the desert and the ocean. In the words of Junie B. Jones, I'm a lucky duck," she had said on the Random House publishing website.
WebProNews did not say Park was when she died Friday.