1. An Illuminated Perimeter with Campimeter Features;Ferree;Amer. Jour, of Ophthal.,1922
2. Ueber die Bestimmung der Retina für farbiges Licht in radiometrischen Einheiten;Ferree;Z. f. Sinnesphysiol.,1911
3. An Experimental Study of the Fusion of Colored and Colorless Light Sensation;Ferree;The Locus of the Action. Jour. Philos., Psych. and Scientific Methods,1911
4. Description of a Rotary Campimeter;Ferree;Amer. Jour. Psychol.,1912
5. An Optics Room and a Method of Standardizing Its Illumination;Ferree;Psych. Rev.,1912