UFO Research Committee of Akron, Ohio, 276, 279, 281, 288; Fitzgerald case studied by, 283–87; Killian case studied by, 53 UFOs, colors of, 7; electromagnetic, 172–75; formations of, 114–16; fragments of, 88, 230–37; invisible, 10, 145, 152, 155–57, 165, 193, 194, 202; motions of, 7; radar reports of, 5, 152, 155–57; shapes of, 7–8; silence of, 193; sounds made by, 7, 193; types of, 6–9; velocity of, 13, 124, 129, 161, 193, 194, 258 Unidentified flying object, 2. _See also_ UFOs Unified field theory, 196 United Airlines flights, UFO reported from, 92, 105 Unknowns, 274. _See_ UFOs V Van Tassel, G. W., 201, 202 Vapor lock, 188, 190 Velocity, difficulty of estimating UFO, 14, 41, 131; of light, 19, 150; of meteors, 93, 98–100; of radio waves, 150; of sound, 147 Venus, magnitude of, 66; mirages of, 67–75, 181; visitors from, 203 Visitors, extraterrestrial, 4, 10–11, 183–84, 186, 199–200, 203–4 W Wallops Island, Va., 44–45 Washington, D.C., “invasion,” 155–57 Washington, Ga., 225 Wave clouds, 26–29 Weather, effects on radar, 150–51, 154, 155, 157–58 Weather balloons, 31–33. _See also_ Balloons White, T. D., 237 White Pass, Wash., 28, Pl. Ia White Sands, N.M., 92, 180 Whitted, J. B., 108. _See also_ Chiles-Whitted sighting Wilkins, H. P., 228 Wilkins, H. T., 16 Witnesses, UFO beliefs of, 52, 54, 80, 104, 106, 110, 168, 259, 269 Wright-Patterson Air Force Base, UFO sighted from, 70–72 X Xenochemistry, 231 Transcriber’s Notes Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in the original book; otherwise they were not changed. Simple typographical errors were corrected; unbalanced quotation marks were remedied when the change was obvious, and otherwise left unbalanced. Illustrations in this eBook have been positioned between paragraphs and outside quotations. Each Plate in the original book contained two or three photographs and one shared caption. In this eBook, each photograph has its own caption. This book uses endnotes following each chapter. In the original book, the endnote numbers began at “1” for each chapter. In this eBook, those numbers are retained, but are preceded by the chapter number and a hyphen to make them unique. A few endnotes include an “a” suffix. Many references to endnotes that reference another book are followed by a pair of square brackets containing the page number in that other book. The book also has four footnotes that originally were at the bottoms of pages, but have been moved here to follow the paragraphs that reference them. They use simple “abcd” references. The superscript on page 194 is shown as ^{33} and the subscripts in Figure 8 are shown as _{1} or _{2}. Three endnotes are unreferenced (XII-14, XIII-2 and XIII-6); several are referenced more than once.