Primary object lessons, for training the senses and developing the faculties of children : a manual of elementary instruction for parents and teachers

Calkins, N. A. Primary object lessons, for training the senses and developing the faculties of children : a manual of elementary instruction for parents and teachers / By N. A. Calkins. – Eighteenth edition, rewritten and enlarged. – New York: Harper & Brothers, publishers, 1879, xiv, 442 p.