Maria Y. Orosa to her mother Juliana Ylagan vda. de Orosa, 1918 - 1920 

Maria Y. Orosa 60th Anniversary

Maria Y. Orosa 113th Birth Anniv.

Maria Y. Orosa, by Manila Bulletin  

Maria Y. Orosa, in Peace & War p1

Maria Y. Orosa, in Peace & War p2