Jelski, Constantine Naturalist. Spent many years in Peru, as a research worker, studying the animals of Peru, So. America. From: "Who's Who in Polish America" by Rev. Francis Bolek, Editor-in-Chief; Harbinger House, New York, 1943
From: "Who's Who in Polish America" by Rev. Francis Bolek, Editor-in-Chief; Harbinger House, New York, 1943