The links here are resources on historical information as well as retailers of equipment that are useful for creating Subtleties or enhancing your Food Presentation.
In this illustrated lecture, food historian Ivan Day outlines the evolution of edible table art from the early Renaissance to the 19th century. From gilded sugar coins distributed at 15th-century Italian wedding feasts to edible models of Victorian London omnibuses, edible table art has been of interest to people for hundreds of years. Day will introduce the materials, equipment, and molds used by past masters of such edible ephemera.
Disclaimer: I do not specifically endorse any of the following, but they may have supplies you are interested in.