Aerial photograph of widespread flooding in Vanport during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. In the foreground, Denver Avenue and Vanport ramp are visible. Handwritten note on back indicates this was taken May 31, 1948 by a someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph of widespread flooding during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. Handwritten note on back indicates this was taken May 31, 1948 by a someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph of widespread flooding during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. Handwritten note on back indicates this was taken May 31, 1948 by a someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph of widespread flooding during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. Handwritten note on back indicates this was taken May 31, 1948 by a someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph of widespread flooding during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. Handwritten note on back indicates this was taken May 31, 1948 by a someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph looking down on flooded buildings and debris in Vanport during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. The cloverleaf roads in the bottom left corner are south of the Interstate Bridge. Handwritten note on back indicates this was taken May 31, 1948 by someone named "Vail." Likely a student at the Northwest School of Photography.

Aerial photograph of widespread flooding during the Vanport Flood. Several apartment buildings float in the floodwater after having been lifted from their foundations. Handwritten note on back indicates this was taken May 31, 1948 by someone named "Dixon." Likely a student at the Northwest School of Photography. This print is from the same negative or take as OrgLot762_B1F8_029.

Negative of a photographic postcard showing an aerial view of the Portland-Columbia Airport, known today as the Portland International Airport. Two Northwest Airlines planes sit on the tarmac next to a building. Handwriting on negative reads, "N.W. Airlines - Columbia Airport - Portland, Oregon. Christian 11-856."

Negative of a photographic postcard showing an aerial view of Portland University, known today as the University of Portland. There are several buildings and large fields. A portion of the Willamette River is visible at the top of the frame. Handwriting on negative reads, "Portland University - Portland, Ore. Christian 11-855A." This phrase is written twice on the negative.

Negative of a photographic postcard showing an aerial view of the Bonneville Dam on the Columbia River in the Columbia River Gorge. Water rushes out of the spillway gates, also known as floodgates, of the dam. View looks east past the dam and up the river. Handwriting on negative reads, "Bonneville Dam - Oregon - Washington. Christian 11-625." Number printed in bottom right corner: 112189

An aerial view of Rose City Golf Course in Portland, showing houses, fields, and roads. The road along the right side of the image is NE Halsey St. (negative 2 of 12).

An aerial view of Rose City Golf Course in Portland, showing houses and fields (negative 1 of 12).

An aerial view of a Portland area housing project on SE Hawthorne Blvd between SE 92nd and SE 89th. “S.E. 89th” is written across the bottom of the negative. Mt. Tabor can be seen in the distance, looking west (negative 11 of 27).

Aerial photograph of the Bonneville Dam on the Columbia River in the Columbia River Gorge. Looking east, up the river. Stamp on the back of the print reads, "Taken by the U.S. Department of the Interior, Bonneville Power Administration, Portland, Oregon. Please credit." Second stamp reads, "H.W.S. Apr 1, 1948." Third stamp reads, "Beaver Engraving Co." of Portland, Oregon.

Aerial view of the Willamette River flowing through Portland, Oregon. Four bridges are visible. From left to right, they are the Steel Bridge, the Burnside Bridge, the Morrison Bridge (under construction) and the Hawthorne Bridge. A wing of the plane is also visible on the lower right (negative 3 of 9).

An aerial view of University of Portland, looking northwest. The Willamette River can be seen curving around a bluff, with the Burlington Northern Railroad Bridge 5.1 spanning across (negative 3 of 4).

An aerial view of the University of Portland, looking east. Several buildings can be seen at the top of a bluff over the Willamette River (negative 1 of 4).

Norwegian ship Thomas S. Gregory, stuck at the outlet of the Swan Island lagoon in Portland. Buildings at the University of Portland can be seen above the Willamette River. This photograph was published in the Oregon Journal on Thursday, May 20, 1948 (negative 3 of 5).

Norwegian ship Thomas S. Gregory, stuck at the outlet of the Swan Island lagoon in Portland. Buildings at University of Portland can be seen above the Willamette River. A photograph from this series was published in the Oregon Journal on Thursday, May 20, 1948 (negative 2 of 5).

Aerial photograph showing part of Hayden Island at bottom; the Columbia River at center; and the Smith and Bybee Wetlands at upper right. The view is to the west. At bottom, on Hayden Island, is the Jantzen Beach amusement park. The wings of the plane from which the photograph was taken are partially visible at left.

An aerial of Portland Airport, looking north towards the Columbia River. (negative 1 of 13).

An aerial view of terminal buildings at Portland International Airport, looking west. Three clusters of buildings can be seen along a tarmac and runway area, with one parked airplane. At the right side of the frame is the Columbia River (negative 2 of 3).

An aerial of Portland Airport, looking southwest. Several airplanes can be seen parked next to the terminal buildings. The Columbia River is at the right side of the frame (negative 5 of 13).

An aerial view of a Portland area housing project, with “Campbell House - Dosch estate” written across the negative (negative 1 of 27).

An aerial view of the University of Oregon Medical School (later Oregon Health & Science University) in southwest Portland, with a recent dusting of snow. S.W. Terwilliger Boulevard can be seen winding along the hillside (negative 9 of 10).

An aerial view of Lownsdale Square in Portland, with a dusting of snow. Looking west, the Multnomah County Courthouse can be seen at the top of the square, with the Spanish-American War Soldier’s Monument at the center (negative 4 of 10).

An aerial view, looking west, of snow covering the southwest hills in Portland. The Charles Piggott House can be seen on S.W. Buckingham Avenue, along with other homes (negative 8 of 10).

An aerial view of the Oregon Journal building, Willamette River, and Hawthorne Bridge in the snow. Looking east, the central east side industrial district can be seen at the other side of the river (negative 2 of 10).