Here are some of his most popular works:
* The Railroad to Fairyland (1904)
* The Adventures of Billy Topsail (1907)
* The Sea Gull's Secret (1909)
* The Golden Key (1911)
* The Yankee in the Boxer Rebellion (1902) - a historical adventure novel
* The Adventures of Captain Billy (1914) - a series of six books
* The Great Adventure (1915)
Swift's books were often filled with adventure, exploration, and whimsical elements, appealing to young readers.
It's worth noting that he is not the same person as Jonathan Swift, the famous author of "Gulliver's Travels."
If you're interested in learning more about Emerson Howland Swift, you can find his books online or at libraries.