Here are some resources about aspics

Here's a terrific article in Gastro Obscura all about aspics. It covers America's current fascination and disgust with aspics as well as the long history of aspics. In the piece, author Diana Hubbell first explains why modern America has such disdain for aspics:

Whether it's a whole turkey in aspic from the 1920s or a gelatin loaf portrait of Queen Elizabeth, the appeal lies in juxtapositions that feel, well, wrong.