12 books
Nature Study for Grammar Grades
The Elementary School Teacher, Vol. 4
The Third Yearbook of the National Society for the Scietific Study of Education - Scholar's Choice Edition
Modern Business; A Series of Texts Prepared as Part of the Modern Business Course and Service of the Alexander Hamilton Institute Volume 15
Nature Study and Related Subjects for the Common Schools Volume 1
Nature Study for Grammar Grades; A Manual for Teachers and Pupils Below the High School in the Study of Nature
Field Work in Nature Study; A Hand-Book for Teachers and Pupils Through the Senses to the Soul
Field Work in Nature Study
Outlines of Natural Science for the Common Schools
The Third Yearbook of the National Society for the Scietific Study of Education
Nature Study for the Common Schools
Number Work in Nature Study, Part 1