Mar. 15, 1951: New Delhi, India. 10:20 a.m. 25 members of a flying club, including the chief aerial engineer and his two assistants. One metallic cigar-shaped object with white exhaust which turned black when it accelerated to an estimated 1,000 mph and made a large loop.
June 1, 1951: Niagara Falls, New York. 4:20 a.m. MSGT H.E. Sweeney, 2 enlisted men watched one glowing yellow-orange, saucer-shaped object with arc-shaped wings, flew straight up. Seen for 30–40 seconds.
July 24, 1951: Portsmouth, New Hampshire. Hanscom AFB Operations Officer Capt. Cobb, Cpl. Fein. One 100–200 foot' tubular object, 5 times long as it was wide, with fins at one end, and colored greyish with many black spots. Flew 800-1,000 mph at 1–2,000 feet altitude, leaving a faint swath.
Aug. 25, 1951: Albuquerque, New Mexico. 9:58 p.m. Sandia Base Security Guard Hugh Young and wife. A flying wing-shaped craft passed over their heads at an estimated 800-1,000 feet' altitude with no sound. Size estimated at one and a half times wingspan of B-36 bomber, or about 350 feet. Dark, chordwise stripes on underside, and 6–8 pairs of soft, glowing lights on trailing edge of "wing." Speed estimated at 300–400 mph, object seen for about 30 seconds.
Aug. 31, 1951: Matador, Texas. 12:45 p.m. Mrs. Tom Tilson, one or two other women. One pear-shaped object with a length of a B-29 fuselage (100'), aluminum or silver with a port or some type of aperture on the side. It moved with smaller end forward, drifting slowly at about 150 feet' altitude, then headed up in a circular fashion and out of sight after a few seconds.
Sept. 6, 1951: Claremont, California. 7:20 p.m. SSGT W.T. Smith, MSGT L.L. Duel. Six orange lights in an irregular formation, flew straight and level into a coastal fog bank after 3–4 minutes.
Sept. 14, 1951: Goose Bay, Labrador, Canada. 9:30 p.m. TSGT W.B. Maupin, Cpl. J.W. Green saw three objects tracked on radar. Two were on a collision course, then one evaded to the right upon the request, by radio, of one of the radar operators. No aircraft were known to be in the area. A third unidentified track then joined the first two. The sighting lasted more than 15 minutes.
Oct. 2, 1951: Columbus, Ohio. 6 p.m. Battelle Memorial Institute graduate physicist Howard Cross. One bright oval with a clipped tail flew straight and level, fading into the distance after 1 minute.
Oct. 3, 1951: Kadena, Okinawa. 10:27 p.m. Radar operators Sgt. M.W. Watson and Pvt. Gonzales and one other Sergeant. One large, sausage-shaped blip tracked at an estimated 4,800 mph.
Oct. 9, 1951: Terre Haute, Indiana. 1:42 p.m. CAA Chief Aircraft Communicator Roy Messmore at Hulman Municipal Airport. One round silver object flew directly overhead, reaching the horizon in 15 seconds.
Oct. 9, 1951 Paris, Illinois. 1:45 Similar to event at Terre Haute (15 miles SE). It was originally listed as "unidentified" but was eventually reclassified.
Oct. 11, 1951: Minneapolis, Minnesota. 6:30 a.m. General Mills balloon researchers, including aeronautical engineer J.J. Kaliszewski, aerologist C.B. Moore (his second unidentified UFO report), pilot Dick Reilly in the air, and Doug Smith on the ground. The flight crew saw the first object, a brightly glowing one with a dark underside and a halo around it. The object arrived high and fast, then slowed and made slow climbing circles for about two minutes, and finally sped away to the east. Soon they saw another one, confirmed by ground observers using a theodolite, which sped across the sky. Total time first object was seen was 5 minutes, second was a few seconds.
Nov. 18, 1951: Washington, D.C. 3:20 a.m. Crew of Capital Airlines DC-4 Fliqht 610, Andrews AFB Senior air traffic controller Tom Selby. One object with several lights, followed the DC-4 for about 20 minutes and then turned back.
Nov. 24, 1951: Mankato, Minnesota. 3:53 p.m. USAF or ANG pilots W.H. Fairbrother and D.E. Stewart in F-51 Mustangs. One milky white object shaped like Northrop flying wing. Estimated 8 foot wing span. Flew straight and level for 5 seconds.
Dec. 7, 1951: Sunbury, Ohio. 4:30 p.m. Amateur astronomer Carl Loar. One silvery sphere seen through telescope. Two specks sighted at sides, object seemed to explode and was replaced by a dark cloud and many specks.
Dec. 7, 1951: Oak Ridge, Tennessee. 8:15 a.m. Atomic Energy Commission guard J.H. Collins. One 20 foot' square object, white-grey but not shiny flew above ridge to clouds and back again twice.
Jan. 16, 1952: Artesia, New Mexico. Carried as an unidentified in the Project Blue Book files.
Feb. 11, 1952: Pittsburgh, Pennsylvania. Carried as an unidentified in the Project Blue Book files.
Feb 23, 1952: Sinuiji, North Korea. Witnesses saw a cylindrical shaped bluish object that disappeared by fading out.
March 20, 1952: Queen Anne's City, Maryland. Orange-yellow light in horizontal flight that made two vertical jumps.
March 23, 1952: Yakima, Washington. Radar sighting of object and a jet fighter was scrambled for an intercept. Ground radars also picked up the object.
March 24, 1952: Point Conception, California. Radar observation made by Hancock.
March 29, 1952: Misawa, AFB, Japan. Carried as an unidentified in the Project Blue Book files.
March 5, 1952: Duncanville, Texas. Object observed by radar maintenance mechanic.
April 5, 1952: Miami, Florida. The witness observed four objects pass the full moon. One object was more plainly seen, was about half the moon's diameter and had a sharply defined leading edge.
April 6, 1952: Temple, Texas. 2:59 p.m. Disc shaped objects in a circular formation.
April 12, 1952: North Bay, Ontario. 11:30 p.m. A round, amber colored object came in from the south. It flew at twice the speed of a F-86 at low level. It stopped and reversed direction.
April 14, 1952: Memphis, Tennessee. 6:30 p.m. Witness saw an inverted bowl with vertical slots. It flew straight and level and had red glowing exhaust.
April 14, 1952: La Crosse, Wisconsin. 12:35 p.m. Witnesses watched objects traveling in straight and level flight change position in a V-formation.
April 15, 1952: Santa Cruz, California. 7:40 p.m. Two circular objects were seen in straight and level flight. Project card noted that the witness, Hays, appeared to be reliable.
April 17, 1952: Longmeadow, Massachusetts. 8:30 p.m. The object is described as star colored and star shaped. It made erratic movements including rapid climbs and dives. Although this sounds suspiciously like a very bright star, the Project Blue Book files carries it as an unidentified.
April 17 — 18, 1952: Yuma Test Station, Arizona. A white, circular object flew across the sky leaving a white vapor trail behind it.
April 18, 1952: Bethesda, Maryland. 1:30 a.m. Witness sighted orange-yellow lights in a V-formation that flew straight and level.
April 18, 1952: Corner Brook, Newfoundland. 10:10 p.m. The witness saw a round, yellowish gold object that seemed to disappear and then come back. What is interesting is that the witness had published an article the day before debunking UFOs.
April 18, 1952: Japan. Object was seen on radar.
April 22, 1952: Okinawa. The crew of a B-29 reported they saw three elliptical shaped object about two to three feet long maneuvering erratically.
April 24, 1952: Bellevue Hill, Vermont. 5:00 a.m. The crew of a C-124 saw three circular objects, bluish in color, as they flew in straight and level flight.
April 24, 1952: Milton, Massachusetts. 2:30 p.m. Witness named Burn saw two dark red objects of a "flat square shape" traveled in "wobbly" flight, climbed, leveled out and then climbed again.
April 24, 1952: Clovis, New Mexico. 8:10 p.m. An Air Force flight surgeon saw many orange-amber lights flying in a formation described as a "blob."
April 27, 1952: Roseville, Michigan. 4:14 p.m. A number of civilians saw four oval and cigar-shaped objects that turned over and changed shape as they flew and performed a variety of manuevers.