Sarah and David Wrobel's project here is so cool: they leveraged the Hypothes.is tag feature to have students explore the "layers" of John Steinbeck's The Grapes of Wrath. While the idea of such layers could perhaps be said about any literary text, for Steinbeck there was something explicit about the layers of that particular novel. As he wrote to his editor at the time:

"The Grapes of Wrath" was published, Steinbeck wrote: "There are five layers in this book, a reader will find as many as he can and he won't find more than he has in himself."