Sectional view of the observatory erected over the cross of St. Paul's Cathedral by Mr. Thos. Hornor [graphic].
33223574
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Lewis Walpole Library > Sectional view of the observatory erected over the cross of St. Paul's Cathedral by Mr. Thos. Hornor [graphic].
"Cross section of the cross showing the route up to the observatory, supported by scaffolding, erected for the purpose of creating a panorama of London."--British Museum online catalogue