Digital Scavenger hunt

Digital Scavenger Hunt
Come to class having investigated at least ONE of the following:
Earliest reference to “boogaloo”
Earliest reference to “jazz”
Earliest reference to “Mambo”
Earliest reference to “Hip Hop”
Earliest reference to “country music” and or “hillbilly music”
Earliest reference to “Rock and Roll”
Earliest reference to “folk music”
Or substitute another term, like “heavy metal” or “salsa”. It just has to be something before 1995. I want you to find the earliest references to the thing that you can find using the collections below. Then take note of how that thing was being described. Write down some quotes, and add them to a blog post describing what you found, with your observations about what you found.
Sources to use
Google Ngram Viewer
Google Books
ProQuest Historical Newspapers
Chronicling America at Library of Congress