51
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
52
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
53
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
54
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
55
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
56
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
57
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
58
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
59
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
60
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
61
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
62
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
63
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
64
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
65
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
66
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
67
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
68
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
69
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
70
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
71
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
72
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
73
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
74
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
75
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
76
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
77
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
78
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
79
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
80
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
81
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
82
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
83
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
84
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
85
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
86
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
87
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
88
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
89
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
90
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
91
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown
92
Standard glass slide: 3¼ inches (83mm) square
Photograph
Photography
Unknown