I picked up a copy of an odd book at a library sale over the holiday weekend:
Ethel Morton at Chautauqua, by Mabell S.C. Smith, published just about a century ago, in 1915.
It's an eye-opener to see what things were considered wild and modern at that time: not only airplanes and electric lights, but also learning to swim, kids earning money (considered "commercialism" and cause for concern among parents), and girls wanting to be considered "individuals" :