These food mistakes cheat your eyesight :   How you be wasting sight-chemicals which act to strengthen your vision. 

 - Nueva York-US  :   Journal of Living,   1946. 
 - páginas 28-29 :   ilustraciones blanco y negro 
 - Mensual 
 - Vol. 11, no. 10(Apr. 1946) 
 - Journal of Living ;   no. 10 .
 - Journal of Living Publishing Corp. .