Project Blue Book Case #1731. On July 29, 1952, a bright object was observed over Osceola, Wisconsin — the second Blue Book unknown from this rural St. Croix Valley community (following Case #10996 from October 1966). July 1952 was during the great wave's peak. The case was classified "Unknown."
Wikimedia Commons (CC BY 3.0) — Bobak Ha'Eri
Second Blue Book unknown over Osceola in the St. Croix Valley, Wisconsin (1952)
UFOs/UAPsLights in the SkyHistorical
45.3212°N, 92.7055°W
Location
Osceola, Wisconsin
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