kcw1939:
Vortograph No. 39
kcw1939:
Vortograph No. 40
kcw1939:
Vortograph No. 41
kcw1939:
Vortograph No. 42
kcw1939:
Vortograph No. 43
kcw1939:
Vortograph No. 44
kcw1939:
Quantograph No. 107
kcw1939:
Vortograph No. 45
kcw1939:
Vortograph No. 46
kcw1939:
Quantograph No. 108
kcw1939:
Quantograph No. 109
kcw1939:
Quantograph No. 110
kcw1939:
Quantograph No. 111
kcw1939:
Quantograph No. 112
kcw1939:
Quantograph No. 113
kcw1939:
Quantograph No. 114
kcw1939:
Quantograph No. 115
kcw1939:
Quantograph No. 116
kcw1939:
Quantograph No. 117
kcw1939:
Quantograph No. 118
kcw1939:
Quantograph No. 119
kcw1939:
Quantograph No. 120
kcw1939:
Quantograph No. 121
kcw1939:
Whitty
kcw1939:
Vortograph No. 47
kcw1939:
Vortograph No. 48
kcw1939:
Vortograph No. 49
kcw1939:
Quantograph No. 122
kcw1939:
Quantograph No. 123
kcw1939:
Quantograph No. 124
