Columbia subject headings:
Heilprin, Angelo, 1853-1907.
Heilprin, Louis, 1851-1912.
Heilprin, Michael, 1823-1888.
Harvard subject headings:
Heilprin, Angelo, 1853-1907.
Heilprin, Louis, 1851-1912.
Heilprin, Michael, 1823-1888.
Princeton subject headings:
Heilprin, Angelo, 1853-1907.
Heilprin, Louis, 1851-1912.
Heilprin, Michael, 1823-1888.