The monument to John Playfair (right) and the New Observatory (left) on Calton Hill, Edinburgh, 1830.
Thomas Hosmer Shepherd, ‘The monument to John Playfair (right) and the New Observatory (left) on Calton Hill, Edinburgh. Line engraving by A. Cruse after T. H. Shepherd.’, Wellcome Collection, 7887i, 1973.
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