The copper plates used for this work remain preserved in Vienna today. The original coloured sketch of Dipsacus sylvestris on paper, and the first and second edition printed versions. This is the original illustration drawn by Hans Sloane of the cocoa tree and its pods. It is held in a herbarium, not a library, which highlights the essential overlap and need for a collaborative approach to conservation and preservation issues. An example of a copper printing plate and the image pulled from it after restoration work.
Books depicting whole trees so magnificently are comparatively rare.
Sepia printed title page of Die Riesen der Pflanzenwelt by Eduard Mielck, 1863. This is an unusual style of botanical publishing, offering romantic scenic views and ecological scenes from nature. A cedar tree in the garden of the palace at Enfield , near London. Lithograph on paper from the book Sylva Britannica by Jacob George Strutt, 1822. An example of the diverse older literature needed by botanists and in particular, plant taxonomists.