Glass Maps

Glass maps are a type of map that show the memories of people. They are activated by light. "'She held the pane under the bright lamp, and immediately the spidery white lines of a finely etched map spread across the surface of the glass like fragile threads of frost on a winter windowpane.'"- Narration, The Glass Sentence, Chapter 5: Learning to Read

Appearances of Glass Maps

 * The Glass Sentence, Chapter 5: Learning to Read

Sophia first learns about glass maps from a map of Boston in February 1831, kept in Shadrack Elli's Basement.