Search seven of former President Bush’s State of the Union Addresses using the impressive visual interface offered by the New York Times. It shows the speeches (shrunk down) and indicates where your word of interest is, and lets you see the context of every instance. You can also easily visually compare the frequency of one word to several other words, across all seven speeches. This tool/corpus is limited, yet it’s accurate enough that it could be used for research
Bonus: Pre-made set of graphs showing patterns of word frequency across 75 years of State of the Union Addresses.