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Title: Beginning Ascent from 12,000 feet over Pine Ridge Indian Reservation.
Identifier(s): graphics:3231; APSimg7798; Graphics Number: F8-44-1
Description: View from balloon during stratosphere flight.; Photograph taken during National Geographic-Army Air Corps stratosphere flight.
Creator: Stevens, Albert William, 1886-1949
Source: William Francis Gray Swann Papers (Mss.B.Sw1); http://amphilsoc.org/mole/view?docId=ead/Mss.B.Sw1-ead.xml
Subject: Math & Physics ; Explorer II (Balloon); Balloons (Aircraft); Aerial photographs; National Geographic-Army Air Corps stratosphere flight
Date: 1935 November

Title: 12,000 feet, lowering electrograph.
Identifier(s): graphics:3242; APSimg7799; Graphics Number: F8-44-4
Description: View of balloon lowering electrograph, to measure rays in the stratosphere.; Photograph taken during National Geographic-Army Air Corps stratosphere flight.
Creator: Stevens, Albert William, 1886-1949
Source: William Francis Gray Swann Papers (Mss.B.Sw1); http://amphilsoc.org/mole/view?docId=ead/Mss.B.Sw1-ead.xml
Subject: Math & Physics ; Explorer II (Balloon); Balloons (Aircraft); Aerial photographs; National Geographic-Army Air Corps stratosphere flight
Date: 1935 November

Title: Devil's Tower.
Identifier(s): graphics:3199; APSimg7803; Graphics Number: F8-49-8
Description: View of Devil's Tower.; Photograph taken during National Geographic-Army Air Corps stratosphere flight.
Creator: Stevens, Albert William, 1886-1949
Source: William Francis Gray Swann Papers (Mss.B.Sw1); http://amphilsoc.org/mole/view?docId=ead/Mss.B.Sw1-ead.xml
Subject: Math & Physics ; Explorer II (Balloon); Balloons (Aircraft); Aerial photographs; National Geographic-Army Air Corps stratosphere flight
Date: 1935 November

Title: Mount Shasta from the Northwest.
Identifier(s): graphics:3212; APSimg7801; Graphics Number: F8-44-9
Description: View of Mount Shasta.; Photograph taken during National Geographic-Army Air Corps stratosphere flight.
Creator: Stevens, Albert William, 1886-1949
Source: William Francis Gray Swann Papers (Mss.B.Sw1); http://amphilsoc.org/mole/view?docId=ead/Mss.B.Sw1-ead.xml
Subject: Math & Physics ; Explorer II (Balloon); Balloons (Aircraft); Aerial photographs; National Geographic-Army Air Corps stratosphere flight
Date: 1935 November

Title: Borglum Memorial.
Identifier(s): graphics:3203; APSimg7802; Graphics Number: F8-49-7
Description: View of memorial, cut into mountain.; Photograph taken during National Geographic-Army Air Corps stratosphere flight.
Creator: Stevens, Albert William, 1886-1949
Source: William Francis Gray Swann Papers (Mss.B.Sw1); http://amphilsoc.org/mole/view?docId=ead/Mss.B.Sw1-ead.xml
Subject: Math & Physics ; Explorer II (Balloon); Balloons (Aircraft); Aerial photographs; National Geographic-Army Air Corps stratosphere flight
Date: 1935 November