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Subcollection: 1928: Aerial Survey of the Philadelphia Region
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[Aerial Survey of the Philadelphia Region], Plate 50
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 49
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 48
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 47
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 46
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 45
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 44
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 43
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 42
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 41
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 40
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 39
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 38
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 37
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 36
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 35
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 34
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 33
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 32
 Maps 1928: Aerial Survey of the Philadelphia Region
[Aerial Survey of the Philadelphia Region], Plate 31
 Maps 1928: Aerial Survey of the Philadelphia Region