Encyclopedia Americana.．Volume 20，Navajo to Opium Encyclopedia Americana.．Volume 2，Ankara to Azusa Encyclopedia Americana.．Volume 24，Russia to Skimmer Encyclopedia Americana.．Volume 14，Heart to India Encyclopedia Americana.．Volume 25，Skin to Sumac Encyclopedia Americana.．Volume 7，Civilization to Coronium Encyclopedia Americana.．Volume 1，A to Anjou Encyclopedia Americana.．Volume 9，Desert to Egret Encyclopedia Americana.．Volume 12，Franco to Goethals Encyclopedia Americana.．Volume 26，Sumatra to Trampoline