HOW IT WORKS
This tool takes the titles, subjects, and approximately the first 100 words from a subset of your top results and feeds them into an algorithm. Keywords shown in the graphics are those found most often in the text with your search term.
The topic for “Illinois” might bring up expected connections from the text like “Chicago,” along with unexpected but commonly related terms like “water,” “steel,” and the names of people who appear frequently in documents about Illinois.