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Liquid Lens by Watson & Sons, c. 1880...
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12 x 10 Premier" by Watson & Sons, No. 5510, ...
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No. 2 Universal Paragon von Swift & Son, Lond...
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Holos Wide Angle by Watson & Sons, Ltd No 226...
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4,2 in. Holos Wide Angle Convertible Lens by ...
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"Opticians to the Queen" Petzval-Type Lens by...
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Portable Symmetrical 5 x 4 "Optimus" by Perke...
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Early Landscape Lens by W. Morley, c. 1850–55...
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A. Ross, Actinic Triplet No. 1A, c. 1863...
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Wide-Angle Lenses Nos. 1 to 5 by Ross, c. 189...
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Ross No. 2 Cabinet Portrait Lens, c. 1860...
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Zeiss Anastigmat 1:18 86 mm by Ross, No. 2562...
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Actinic Doublet by T.H. Ross, c. 1868...
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A. Ross No. 1 C. de V. (Cartes de Visite), No...
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Small Petzval-Type Portrait Lens by A. Ross N...
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Zeiss Convertible Anastigmat by Ross, c. 1895...
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Zeiss Convertible Anastigmat by Ross, London,...
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Brass Tube of an A. Ross Landscape Lens (With...
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Ross Actinic Doublet 12 x 10, No. 12202, c. 1...
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Th. Ross Actinic Doublet, No. 12501, 12 x 10,...
