Etchings with resin ground (1852-1864). Experimental glyph copper plate (copper with traces of Vanadium, Arsenic and Lead). Seeds, 5 inch x 3 3/4 inch, with proof. Dandelion Seeds, 'Taraxacum officinale' (Kraus, 'Sun Pictures', Catalogue 12). With proof. Experimental glyph copper plate of dandelion seeds 'Taraxacum officinale' 1852-1864