Project 10073 Record — Des Moines, Iowa, 29 June 1947
A civilian in Des Moines, Iowa, reported seeing five large, dirty-white saucer-shaped objects on June 29, 1947. The report was officially classified as an unreliable report by Project 10073.
Document Collection
1947
Incident #2 Sighting Report — Des Moines, Iowa, 29 June 1947
A 1947 sighting report of multiple 'saucer' shaped objects over Des Moines, Iowa. The document is officially classified as an unreliable report by ATIC.
Intelligence Assessment: Maury Island and Related Flying Disc Reports, August 1947
This document compiles intelligence reports from 1947 regarding the Maury Island flying disc incident, concluding it was a hoax. It also clarifies that a B-25 crash during the same period was due to mechanical failure, not sabotage.
Temporary ATIC Form 329 - Tempe, Arizona Sighting
This document contains a 1947 sighting report from Tempe, Arizona, and an incident index of Project Grudge evaluations by Dr. Hynek. It highlights the classification methods used by the Air Technical Intelligence Center (ATIC) for UAP reports.
Project 10073 Record Card — Oakdale, California, 7 July 1947
A 1947 sighting report from Oakdale, California, involving 12 silver objects observed by a single witness. The case was later closed by ATIC due to insufficient evidence.
Project 10073 Record: Black River Falls, Wisconsin
A reported flying disc found in Wisconsin in 1947 was investigated by the FBI and military, who determined it was a hoax constructed of plywood and cardboard. The finder was charging admission to view the object, which was subsequently confiscated by local police.
Project 10073 Record — Seattle, Washington, 15 July 1947
This document details a 1947 report of a 'flying disk' landing in Seattle, which was quickly identified by FBI and Navy investigators as a man-made hoax constructed from plywood, radio tubes, and an oil can.
Project 10073 Record — Jackson, Ohio, 21 July 1947
A reported 'flying saucer' found near Jackson, Ohio, was identified by the 700-F CIC Detachment as a U.S. Army radiosonde transmitter. The object was recovered from a local resident and turned over to the Sheriff's office.
Incident #19 Sighting Report — Dayton, Ohio, 20 October 1947
A 1947 sighting report from Dayton, Ohio, describing two unidentified cigar-shaped objects. The investigation deemed the witness reliable and concluded the objects remain unidentified.
Incident #20 Sighting Report — Xenia, Ohio, 20 October 1947
This document is a Project Grudge sighting report for an incident in Xenia, Ohio, on October 20, 1947. It concludes that the data provided by the civilian witness was insufficient to reach a definitive explanation.
Incident #94 Sighting Report
A 1947 sighting report by a C47 crew of a high-speed object trailing green and blue flames. The incident was officially classified as a probable meteor.
Incident #95 Sighting Report — Rosedale, California, 30 December 1947
A 1952 ATIC report documenting a 1947 aerial sighting by a C-47 crew near Rosedale, California. The object was described as moving at a very high speed at a low altitude.
Incident #69 Sighting Report — Philadelphia, Pennsylvania, 6 August 1947
This is an ATIC sighting report (Incident #69) from August 6, 1947, detailing a 'fireball' or 'big firecracker' observed by multiple witnesses in Philadelphia. The object was described as large, white, and moving at high speed with a brief buzzing sound.
Incident #61, 62 Sighting Report — Logan, Utah, 8 September 1947
A 1947 sighting report from Logan, Utah, involving a civilian couple who observed approximately 12 illuminated, pigeon-shaped objects circling the city. The investigator's note suggests the objects were likely birds.
Incident #35 Sighting Report — Off Coast of Oregon, 12 November 1947
Incident #35 describes a 1947 sighting of two luminous objects off the coast of Oregon. The Air Materiel Command concluded the objects were likely fragments of a meteor.
Incident #96 Sighting Report — 30 mi. W. Lovelock, Nevada, 1947
This is an ATIC sighting report (Incident #96) regarding a civilian observation of an aerial object 30 miles west of Lovelock, Nevada, on December 30, 1947. The object was observed at an estimated altitude of 1200 feet.
Project SIGN Incident #72 Assessment — Alaska, 1947
This document provides an assessment of Project SIGN incident #72 in Alaska, concluding that the data is insufficient for identification. It also includes administrative correspondence regarding the role of the Air Weather Service in identifying balloon-related sightings.
Chron. 24-185-19-7X — Phoenix, Arizona, June 1947
This document is a brief administrative record from June 1947 referencing two photographs of an unidentified object in Phoenix, Arizona. It serves as a primary source for the existence of these specific images within the archival record.
Project 10073 Record — Hamburg, New York, June 1947
A June 1947 sighting in Hamburg, New York, of a crate-shaped object with rainbow colors. ATIC investigators concluded the object was possibly an aircraft.
Project 10073 Record — Seattle, Washington, June 1947
A 1947 civilian report of three round, silver objects over Seattle, Washington. The military investigation concluded there was insufficient data for evaluation.
Project 10073 Record — Rehoboth Beach, Delaware, 2 June 1947
A 1947 sighting report of a 'mayonnaise jar'-shaped object in Delaware was evaluated as potentially being a 'Bumble bee' ram-jet missile test from the Applied Physics Laboratory of Johns Hopkins University. The document also includes a broader index of incident evaluations from Project Grudge.
Project 10073 Record: Incident #38, Hungary, 10 June 1947
This document records a 1947 sighting of 'silver balls' in Budapest, Hungary. It concludes that there was insufficient data to identify the objects, noting they were likely not meteorites.
Incident #24 Sighting Report — Weiser, Idaho, 12 June 1947
This document contains a 1947 sighting report from Weiser, Idaho, alongside 1949 Air Materiel Command correspondence regarding Project SIGN's investigation procedures. It highlights the military's early efforts to categorize UAP sightings, often attributing them to balloons or meteors.
Project 10073 Record: Incident #29 - Bakersfield, California
This document details a 1947 sighting by pilot Dick Rankin of ten unidentified objects in Bakersfield, California. Military investigators concluded the objects were likely ordinary aircraft, despite the witness's comparison to the experimental XF5U-1.
Incident #22 Sighting Report — Spokane, Washington, 21 June 1947
A 1947 sighting in Spokane, Washington, was investigated by Project SIGN. The official conclusion was that the unidentified object was likely a series of balloons.
Incident #45 Sighting Report — Greenfield, Massachusetts, 22 June 1947
A 1947 sighting report from Greenfield, Massachusetts, describing a polished aluminum object. The incident remains unexplained as it does not fit standard astronomical explanations.
Project 10073 Record: Incident #17 - Mt. Rainier, Washington, 24 June 1947
This document details the 1947 Kenneth Arnold 'flying saucer' sighting near Mt. Rainier, which initiated the modern UFO phenomenon. The Air Force officially concluded the sighting was a mirage, citing significant mathematical inconsistencies in the witness's report.
Project 10073 Record: Incident #28, Idaho, 24 June 1947
Incident #28 involves a 1947 sighting of a stationary, comet-like object in Idaho, which was officially concluded to be an astronomical phenomenon, likely the planet Saturn or Mercury. The document also provides administrative context regarding the Air Force's systematic investigation of such reports under Project SIGN.
Incident #68 — Portland, Oregon — 24 June 1947
A 1947 sighting report of 5-6 disk-shaped objects in the Cascade Mountains, accompanied by a claim of electromagnetic interference with a compass. Evaluators concluded the report was likely influenced by other media reports and that the alleged magnetic effects were physically implausible.
Project 10073 Record: Incident #44, Rockfield, Wisconsin, 28 June 1947
A 1947 sighting report of seven to ten saucer-shaped objects near Rockfield, Wisconsin, was deemed insufficient for evaluation by project investigators. The report highlights the influence of contemporary media on witness accounts during the period.
Project 10073 Record: Incident #45 - Illinois, 28 June 1947
This document records a 1947 UFO sighting in Illinois reported via a radio broadcast. Investigators concluded there was insufficient data to evaluate the event.
Incident #91 Sighting Report — Maxwell Field, Montgomery, Alabama, 28 June 1947
Incident #91 involved a sighting of a brilliant, zig-zagging light by four military officers over Maxwell Field in 1947. While observers noted the object's behavior defied aerodynamic laws, the Air Weather Service later concluded it was likely a weather balloon.
Incident #53 Sighting Report — Lake Meade, Nevada, 28 June 1947
A 1947 sighting of 5-6 circular objects near Lake Meade, Nevada, by a military pilot. The incident was officially concluded to be a cluster of balloons, likely cosmic ray apparatus, based on an analysis of the pilot's flight path.
Incident #21 and #43 Sighting Reports — Des Moines and Clarion, Iowa, 29 June 1947
A bus driver reported observing thirteen 'inverted saucer' objects near Des Moines and Clarion, Iowa, on June 29, 1947. The Air Materiel Command concluded there was no astronomical explanation but found insufficient information for a definitive analysis.
Incident #90 Sighting Report — Las Cruces, New Mexico, 29 June 1947
This document details the investigation of a June 1947 sighting of an unidentified aerial object by Naval Research Laboratory personnel in New Mexico. Official conclusions remained inconclusive, suggesting the object could have been a meteor due to insufficient data.
Project 10073 Record: Incident #23 - Boise, Idaho - 30 June 1947
A 1947 sighting of a stationary, silvery object in Boise, Idaho, was officially evaluated by the Air Materiel Command as a likely sun-cloud effect. The document also provides administrative context regarding the Air Force's investigation of unidentified aerial phenomena under Project SIGN.
Incident #234 — Photographs of 'Flying Saucer' — Oak Ridge, Tennessee, July 1947
This document file concerns the investigation of a 1947 UFO sighting in Oak Ridge, Tennessee, which was determined to be a photographic flaw caused by faulty film development. The case was officially closed by the Air Materiel Command after technical analysis confirmed the 'object' was not a real phenomenon.
Project SIGN and Project GRUDGE Incident Reports and Evaluations
This document compiles 1947 UFO incident reports and evaluations for Projects SIGN and GRUDGE. It categorizes sightings into astronomical, conventional, or unexplained, concluding that most are misidentifications of balloons, meteors, or aircraft.
Compilation of Reports on Flying Disks — Portland, Oregon, July 1947
This document compiles reports of multiple 'flying disk' sightings in the Portland, Oregon area on July 4, 1947. Official evaluations from Project Grudge conclude there is no astronomical explanation, suggesting potential explanations ranging from pranksters dropping aluminum foil to unidentified aerial phenomena.
Incident #25 Sighting Report — West Trenton, New Jersey, 4 July 1947
A 1947 sighting of a luminous object in West Trenton was officially attributed to a meteor or Fourth of July fireworks. The document also details the Air Weather Service's role in investigating potential balloon sightings for Project SIGN.
Temporary ATIC Form 329 - Sighting Report, Warren, Ohio, July 1947
A 1947 sighting report from Warren, Ohio, detailing a blue-white object that performed a landing maneuver. The case was ultimately classified as having no known discovery of the object.
Incident #89 — 100 mi. W of Kansas City, Missouri — 6 July 1947
This document details a 1947 UFO sighting by an Air Force pilot near Clay Center, Kansas, and the subsequent military investigation. It includes an official assessment that the object was likely a sun reflection, while noting inconsistencies in the pilot's report.
File 41 — Shreveport, Louisiana, July 7, 1947
This is a brief administrative file cover dated July 7, 1947, from Shreveport, Louisiana, which references the inclusion of three photographs.
Project 10073 Record — Flying Disc Found in Shreveport, Louisiana, 7 July 1947
A reported flying disc in Shreveport, Louisiana, was investigated by the Air Training Command and determined to be a hoax. The object was a man-made device constructed from electrical components and an aluminum disc, created as a practical joke.
Project 10073 Record Card — 7 July 1947, East Troy, Wisc
A Project 10073 record card documenting a 1947 saucer sighting in East Troy, Wisconsin. The investigation concluded there was insufficient data for analysis.
Incident #3 Sighting Report — Muroc, California, 7 July 1947
A 1947 sighting report by Major J. C. Wise at Muroc Army Air Field describes a spherical object moving at 200-225 MPH. Investigators concluded the object was likely a weather balloon affected by desert air currents.
Incident #40 Sighting Report — Phoenix, Arizona, 7 July 1947
A 1947 UFO sighting in Phoenix, Arizona, involving photographs taken by a civilian, was investigated by the Air Force and ultimately dismissed as a probable hoax. Investigators found the witness's claims inconsistent and the photographic evidence to be of poor quality and likely manipulated.
Project Record Card — 21 July 1947 Sighting, Chengtu, China
A 1947 sighting of a falling object in Chengtu, China, was investigated and identified as a radiosonde. The object contained batteries, radio tubes, and English text.
Temporary ATIC Form 329 — Milan, Italy, August 1947
A 1952 ATIC form documenting a 1947 sighting of four objects in Milan, Italy. The objects were observed in horizontal flight moving from the east.
Project 10073 Record: Flying Saucer Hoax, Danforth, Illinois
An alleged 'Flying Saucer' recovered in Danforth, Illinois, was determined by the Air Materiel Command to be a hoax composed of salvaged electronic parts. The investigation confirmed no connection to any military research projects, including Project Mogul.
Report of Trip to Holloman Air Force Base, 5-6 May 1948
This document contains intelligence reports from 1948 regarding Project SIGN investigations into UAP sightings at Holloman Air Force Base. It details witness interviews and radar data, concluding that some sightings remained unexplained and were not attributable to balloons or known aircraft.
Incident #33 Sighting Report — Hackensack, New Jersey, 3 August 1947
This document file covers the Air Force investigation into alleged 'Flying Saucer' sightings in New Jersey, including the analysis of physical specimens submitted by a witness. The Air Force concluded the specimens were a hoax and unrelated to any military projects.
Project 10073 Record Card — Incident #73, Boston, Massachusetts, 4 August 1947
A civilian pilot reported two elliptical, deep gold objects over Boston on 4 August 1947. Official investigators concluded the sighting was likely a sun reflection off an aircraft or balloon.
Incident #58 Sighting Report — NW of Bethel, Alaska, 4 August 1947
A pilot and co-pilot reported a high-speed, black, saucer-shaped object near Bethel, Alaska, in August 1947. Military investigators concluded the sighting was likely a misidentification of a conventional aircraft due to blinding sunset conditions.
Incident #69, 69a, and 70/70a Sighting Reports — Philadelphia, Pennsylvania, August 1947
Multiple witnesses in Philadelphia reported a fast-moving, white, firecracker-shaped object on August 6, 1947. Official investigations ruled out industrial and military causes, concluding the object was likely a large meteor or fireball.
Incident #66 Sighting Report — Silver Springs, Ohio, 7 August 1947
Incident #66 involves an Air Force officer's report of a bright, orange, flame-like object seen over Silver Springs, Ohio, in 1947. The official military evaluation concluded the object was a meteor.
Incident #76 Sighting Report — Salmon Dam, Idaho, 13 August 1947
Incident #76 involves a 1947 sighting of two circular objects near Salmon Dam, Idaho. The Air Materiel Command concluded the objects were likely ordinary aircraft observed from a great distance.
Incident #75 Sighting Report — Snake River Canyon, Idaho, August 13, 1947
A farmer and his two sons reported a disk-shaped object in Snake River Canyon, Idaho, on August 13, 1947. The Air Materiel Command concluded the object was an atmospheric eddy.
Incident #67 Sighting Report — Near Placerville, California, 14 August 1947
This report documents a 1947 sighting of a metallic, rocket-shaped object near Placerville, California. The investigation concluded that the sighting could not be easily explained as a meteor or conventional aircraft due to the reported smoke trail and flight characteristics.
Incident #135 Sighting Report — Rapid City, South Dakota, August 1947
An Air Force officer reported seeing twelve elliptical objects in a tight diamond formation over Rapid City AFB in August 1947. The report was evaluated by Dr. Hynek, who suggested the possibility of auroral streamers as an explanation.