Lectures on architecture, consisting of rules founded upon harmonick and arithmetical proportions in building ... (1759)
Morris, Robert, 1701-1754, Toms, W. H. (William Henry), approximately 1700-approximately 1750, Cole, B. (Benjamin), Sayer, Robert, 1725-1794 · London : Printed for R. Sayer, at the Golden Buck, opposite Fetter-Lane, Fleet-Street · leaf 177
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Architecture
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.