Morning exercises and school recreations : a treasury of quotations, stories, science, recreation, history, biography, queries, music; an exercise for each day of the school year /

Mode of access: Internet.

Scientific amusements in philosophy and mathematics : including arithmetic, acoustics, electricity, magnetism, optics, pneumatics : together with amusing secrets in various branches of science, the whole calculated to form an agreeable and improving exercise for the mind /

Mode of access: Internet.

Mental fatigue during continuous exercise of a single function /

Also published as thesis (Ph.D.) Columbia university, 1918.