Stargazing: past and present
A history and explanation of telescopes and observatory practice by Norman Lockyer with G. M. Seabroke, published by Macmillan in London in 1878 for general and amateur astronomical readers. The plates are white-line optical diagrams printed on solid black grounds, tracing light through lenses, mirrors and prisms; designers can lift ray paths, lettered geometry, and reversed-out line work.
