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It's fascinating stuff, though. The text does give some limited descriptions, and opening the book to a random page reveals both " . . .Crawley danced while he played clarinet, juggling the pieces as he dismantled it" and "As performed by Little Egypt at the Chicago World's Fair in 1893, where it first received national attention as the Hootchy-Kootchy, the Shake dance was not particularly rhythmic."
As an actual history of American dance, for me this book lacks coherence. But I did learn about ways in which African dance influenced American, see the names of quite a lot of performers, steps, and performance venues, and learn to play the "Buck Dancer's Lament" on the piano. If you want something you can read a page of and then put down until later, this will fill the bill.