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Subcollection: 1928: Aerial Survey of the Philadelphia Region
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[Aerial Survey of the Philadelphia Region], Plate 30
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 29
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 28
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 27
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 26
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 25
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 24
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 23
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 22
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 21
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 20
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 19
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 18
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 17
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 16
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 15
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 14
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 13
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 12
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 11
 Maps 1928: Aerial Survey of the Philadelphia Region