… Just came from Colombia, where the enormous oil on canvas by Martinez Delgado was transported to the Bank, It is the last masterpiece of a remarkable artist. What an honor for the Bank and for the people of Colombia.
New York City Historic Society Archives, A Ref 23990092
… and the art was in every corner and wall… a Mural of the Century of Progress in Colombia South America is rich in detail, painted by a student of the Fine Arts Academy of Chicago named Santiago Martinez; a name to remember…
Mrs. Eleanor Roosevelt (Inauguration day of the 1933 Chicago International Fair)
FDR Library, Folio 345 - visit of Mrs Roosevelt to the fair P. 56
…Young Colombia Santiago Martínez made a mural in the 3rd pavilion showing much talent, He is a student at the academy of fine arts in Chicago, and a great candidate to come to our lectures.
letter to a gallery in NY --- New York city History Academy Archives