It is written :   Book more than thousand years old. 

 - Nuevo Mexico-US :   School of american research ,   1937. 
 - página 106 :   Ilustraciones blanco y negro 
 - Irregular 
 - Vol.XLIII, no.16-18 (Oct/Nov 1937) 
 - El palacio ;   no.16-18 .
 - University of New Mexico. .