Jessup now stationed in at the Lamont-Hussey Observatory in South African, was responsible for locating 854 double-stars between May 1928 and July 1930.
Lamont-Hussey Observatory, South Africa

Jessup now stationed in at the Lamont-Hussey Observatory in South African, was responsible for locating 854 double-stars between May 1928 and July 1930.