“Baron Trump's Marvellous Underground Journey” by Ingersoll Lockwood — a free Project Gutenberg ebook, available to read as an EPUB on BookMarket.
Subjects: Adventure stories; Conduct of life -- Juvenile fiction; Courtship -- Juvenile fiction; Dogs -- Juvenile fiction; Fantasy fiction. Original source: https://www.gutenberg.org/ebooks/57426.
This ebook is in the public domain in the United States; the Project Gutenberg eBook license applies to the original text.