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3 results for: alvan clark

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A 23-inch refractor built by Alvan Clark
ARP23A16_209

A 23-inch refractor built by Alvan Clark

A 23-inch refractor built by Alvan Clark
ARP23A16_208

A 23-inch refractor built by Alvan Clark

The testing of glass for the 26-inch refractor built by Alvan Clark
ARP23A16_212

The testing of glass for the 26-inch refractor bui...