Wikipedia page about this book: https://en.wikipedia.org/wiki/Aunt_Jane%27s_Nieces_Abroad

Release date is 2005-08-21

E-text prepared by Afra Ullah, Emmy, and the Project Gutenberg Online Distributed Proofreading Team

"Aunt Jane's Nieces Abroad" by L. Frank Baum is a young adult novel written in 1907. Eccentric millionaire John Merrick takes his three nieces on a grand European tour, where adventure and danger await. In Sicily, they encounter the mysterious Victor Valdi, who leads a double life as a brigand kidnapping tourists for ransom. When Uncle John is captured, his courageous nieces must mount a daring rescue, while romantic intrigue unfolds and trust proves dangerously misplaced in this tale of Americans abroad. (This is an automatically generated summary.)

Original publication data not identified