The long secret

Blurb

The Long Secret is a children's novel written and illustrated by Louise Fitzhugh that was released by Harper & Row on October 27, 1965. It is a sequel or "companion" to Harriet the Spy, the only one published during Fitzhugh's lifetime.
Sport, another sequel to Harriet written by Fitzhugh, was published by the Dell imprint Delacorte Press in 1979.