Columbia subject headings:
Harvard subject headings:
Costa Rica--Antiquities--Congresses.
Hartman, Carl Vilhelm, 1862-1941--Congresses.
Princeton subject headings:
Costa Rica--Antiquities--Congresses.
Hartman, C. V. (Carl Vilhelm), 1862-1941--Congresses.
Indians of Central America--Costa Rica--Antiquities--Congresses.