Columbia subject headings:
Escobar, Aurelio, 1888-1964.
Gutiérrez, H. J. (Heliodoro Juan), 1878-1933.
Mexico--History--Revolution, 1910-1920--Pictorial works.
Photographers--Mexico--Biography.
Photography, Panoramic--Mexico.
Portrait photography--Mexico.
Harvard subject headings:
Princeton subject headings:
Escobar, Aurelio, 1888-1964.
Gutiérrez, H. J. (Heliodoro Juan), 1878-1933.
Mexico--History--Revolution, 1910-1920--Pictorial works.
Photographers--Mexico--Biography.
Photography, Panoramic--Mexico.
Portrait photography--Mexico.