41
Note: '; ...University of Pennsylvania...
Photo
42
43
44
Note: '; ...University of Pennsylvania...
Photo
45
Note: '; ...Pennsylvania Railroad...
Photo
46
Note: '; ...University of Pennsylvania...
Photo
47
Note: '; ...Pennsylvania Railroad...
Photo
48
Note: '; ...University of Pennsylvania...
Photo
49
Note: '; ...University of Pennsylvania...
Photo
50
Note: '; ...University of Pennsylvania...
Photo
51
Note: '; ...University of Pennsylvania...
Photo
52
Note: '; ...Pennsylvania Railroad...
Photo
53
Note: '; ...Pennsylvania Railroad...
Photo
54
55
Note: '; ...Pennsylvania Railroad...
Photo
56
57
Note: '; ...Pennsylvania Company...
Photo
58
Note: '; ...University of Pennsylvania...
Photo
59
Note: '; ...Pennsylvania Railroad...
Photo
60
Note: '; ...University of Pennsylvania...
Photo