The Wellcome Trust commissioned this portrait for the opening of the Wellcome Collection.
In 1869 Sir Henry Wellcome's first product, at the age of 16, was invisible ink (in fact just lemon juice) which he sold through the Garden City Herald. To celebrate this fact, Jerram created an invisible portrait of Sir Henry made by screenprinting with lemon juice. Each delegate attending the opening was given a framed invisible portrait to be revealed by placing the image under the grill for 2 minutes. Edition of 1000.