“The Camp Fire Girls Solve a Mystery; Or, The Christmas Adventure at Carver House” by Hildegard G. Frey — a free Project Gutenberg ebook, available to read as an EPUB on BookMarket.
Subjects: Camp Fire Girls -- Juvenile fiction; Clubs -- Juvenile fiction; Family -- Juvenile fiction; Mystery and detective stories; Prudence -- Juvenile fiction. Original source: https://www.gutenberg.org/ebooks/38983.
This ebook is in the public domain in the United States; the Project Gutenberg eBook license applies to the original text.