In 1841 he first proposed a new depot and personally lobbied congress for the funds .
Gilliss is most noted for his successful efforts to establish the U.S. Naval Observatory , the first national observatory in the United States .
In 1841 Gilliss first proposed a new depot and personally lobbied congress for the funds .
Gilliss is most noted for his successful efforts to establish the U.S. Naval Observatory , the first national observatory in the United States .