The delightful potted aloe on this poster is from Johann Wilhelm Weinmann's Duidelyke vertoning, an important 18th–century botanical work in the Rare Books Collections of the Mertz Library here at the Garden.
Johann Wilhelm Weinmann (1683–1741) was an apothecary, botanist, and judge in Regensburg, Germany. He commissioned Duidelyke vertoning, also known as Phytanthoza Iconographica, a multivolume work published between 1736 and 1741, to illustrate the plants in his herbarium. Featuring more than 1,000 hand–colored engravings, it is one of the first botanical works to use color printing. Its copper plate engravings were a combination of etching and mezzotint, which allowed for delicate lines and a very fine grain. Additional color was then added to the plates by hand.