| # | Book Title | Author | |
|---|---|---|---|
| 1 | Betty Gordon at Bramble Farm; or, The Mystery of a Nobody | Emerson, Alice B. | |
| 2 | Betty Gordon in Washington; or, Strange Adventures in a Great City | Emerson, Alice B. | |
| 3 | Betty Gordon in the Land of Oil; or, The Farm That Was Worth a Fortune | Emerson, Alice B. | |
| 4 | Betty Gordon at Boarding School; or, The Treasure of Indian Chasm | Emerson, Alice B. | |
| 5 | Betty Gordon at Mountain Camp; or, The Mystery of Ida Bellethorne | Emerson, Alice B. | |
| 6 | Betty Gordon at Ocean Park; or, School Chums on the Boardwalk | Emerson, Alice B. | |
| 7 | Betty Gordon and Her School Chums; or , Bringing the Rebels to Terms | Emerson, Alice B. | |
| 8 | Betty Gordon at Rainbow Ranch; or, Cowboy Joe's Secret | Emerson, Alice B. | |
| 9 | Betty Gordon in Mexican Wilds; or, The Secret of the Mountains | Emerson, Alice B. | |
| 10 | Betty Godon and the Lost Pearls; or, A Mystery of the Seaside | Emerson, Alice B. | |
| 11 | Betty Gordon and the Hale Twins; or, An Exciting Vacation | Emerson, Alice B. | |
| 12 | Betty Gordon at Mystery Farm; or, Strange Doings at Rocky Ridge | Emerson, Alice B. | |
| 13 | Betty Gordon on No-Trail Island; or, Uncovering a Queer Secret | Emerson, Alice B. | |
| 14 | Betty Gordon and the Mystery Girl; or, The Secret at Sundown Hall | Emerson, Alice B. |