Encyclopedia Americana Volume 25
Encyclopedia Americana Volume 12, Penerbit Grolier
Encyclopedia Americana Volume 22, Penerbit Grolier
Encyclopedia Americana Volume 5, Penerbit Grolier
Encyclopedia Americana Volume 18, Penerbit Grolier
Encyclopedia Americana Volume 17, Penerbit Grolier
Encyclopedia Americana Volume 19, Penerbit Grolier
Encyclopedia Americana Volume 4, Penerbit Grolier
Encyclopedia Americana Volume 2, Penerbit Grolier
Encyclopedia Americana Volume 6, Penerbit Grolier