Funk & Wagnalls Standard Reference Encyclopedia Volume 18: Nevada—Ozone Wilfred Funk, Inc., portions copyright 1931, 1934–35, 1937, 1942, 1949, 1951–52, 1954–1964 Standard Reference Works Publishing Co., US, 1964 edition
Funk & Wagnalls Standard Reference Encyclopedia Volume 17: Middle East—Neutron Wilfred Funk, Inc., portions copyright 1931, 1934–35, 1937, 1942, 1949, 1951–52, 1954–1964 Standard Reference Works Publishing Co., US, 1964 edition
Funk & Wagnalls Standard Reference Encyclopedia Volume 16: Longevity—Middle East Wilfred Funk, Inc., portions copyright 1931, 1934–35, 1937, 1942, 1949, 1951–52, 1954–1964 Standard Reference Works Publishing Co., US, 1964 edition
Funk & Wagnalls Standard Reference Encyclopedia Volume 15: Judgement—Long Branch Wilfred Funk, Inc., portions copyright 1931, 1934–35, 1937, 1942, 1949, 1951–52, 1954–1964 Standard Reference Works Publishing Co., US, 1964 edition
Funk & Wagnalls Standard Reference Encyclopedia Volume 14: Insect—Judges, Book of Wilfred Funk, Inc., portions copyright 1931, 1934–35, 1937, 1942, 1949, 1951–52, 1954–1964 Standard Reference Works Publishing Co., US, 1964 edition