Robert Koch, par Grace T. Hallock et C.E. Turner
Health Heroes
After the Rain
Louis Pasteur, by Grace T. Hallock ... and C.E. Turner
Robert Koch. By Grace T. Hallock and C[lair] E[lsmere] Turner
Edward Jenner, by Grace T. Hallock ... and C.E. Turner
Dramatizing child health; a new book of health plays, with chapters on the writing, the producing, and the educational value of dramatics, by Grace T. Hallock; decorations by Harrie Wood
What to Do Till the Doctor Comes in Case of Illness Or Accident. [By] D.B. Armstrong ... with the Collaboration of Grace T. Hallock
What to Do Till the Doctor Comes in Case of Illness Or Accident. What to Do Till the Doctor Comes ... A Home Manual for Emergencies. By D.B. Armstrong ... with the Collaboration of Grace T. Hallock, Etc
Marie Curie and the Story of Radium
Les heros de la bonne sante
The Land of Health
Health Heroes
The Land of Health
The Land of Health; How Children May Become Citizens of the Land of Health of Learning and Obeying Its Laws
Health Heroes
Working Together for Health and Safety
The Voyage of Growing Up
Grain through the ages