The Bobbsey Twins (Grosset & Dunlap) 1904-1979
___ 1. The Bobbsey Twins; or, Merry Days Indoors and Out (1904; Rev. ed. 1928;
[The Bobbsey Twins] 1950; [The Bobbsey Twins of Lakeport] 1961)
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2. The Bobbsey Twins in the Country (1904; Rev. ed. 1950; [The Bobbsey Twins'
Adventure in the Country] 1961)
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3. The Bobbsey Twins at the Seashore (1907; Rev. ed. 1950; [The Bobbsey Twins'
Secret at the Seashore] 1962)
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4. The Bobbsey Twins at School (1913; Rev. ed. [The Bobbsey Twins and the
Mystery at School] 1962)
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5. The Bobbsey Twins at Snow Lodge (1913; Rev. ed. [The Bobbsey Twins and the
Mystery at Snow Lodge] 1960)
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6. The Bobbsey Twins on a Houseboat (1915; Rev. ed. 1955)
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7. The Bobbsey Twins at Meadow Brook (1915; Rev. ed. [The Bobbsey Twins' Mystery
at Meadowbrook] 1963)
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8. The Bobbsey Twins at Home (1916; Rev. ed. [The Bobbsey Twins' Big Adventure
at Home] 1960)
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9. The Bobbsey Twins in a Great City (1917; Rev. ed. [The Bobbsey Twins' Search
in the Great City] 1960)
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10. The Bobbsey Twins on Blueberry Island (1917; Rev. ed. 1959)
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11. The Bobbsey Twins on the Deep Blue Sea (1918; Rev. ed. [The Bobbsey Twins'
Mystery on the Deep Blue Sea] 1965)
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12. The Bobbsey Twins in Washington (1919; Rev. ed. [The Bobbsey Twins'
Adventure in Washington] 1963)
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13. The Bobbsey Twins in the Great West (1920; Rev. ed. [The Bobbsey Twins'
Visit to the Great West] 1966)
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14. The Bobbsey Twins at Cedar Camp (1921; Rev. ed. [The Bobbsey Twins and the
Cedar Camp Mystery] 1967)
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15. The Bobbsey Twins at the Country Fair (1922; Rev. ed. [The Bobbsey Twins and
the County Fair Mystery] 1960)
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16. The Bobbsey Twins Camping Out (1923; Rev. ed. 1955)
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17. The Bobbsey Twins and Baby May (1924; Rev. ed. [The Bobbsey Twins'
Adventures with Baby May] 1968)
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18. The Bobbsey Twins Keeping House (1925; Rev. ed. [The Bobbsey Twins and the
Play House Secret] 1968)
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19. The Bobbsey Twins at Cloverbank (1926; Rev. ed. [The Bobbsey Twins and the
Four-Leaf Clover Mystery] 1968)
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20. The Bobbsey Twins at Cherry Corners (1927; Rev. ed. [The Bobbsey Twins'
Mystery at Cherry Corners] 1971)
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21. The Bobbsey Twins and Their Schoolmates (1928)
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22. The Bobbsey Twins Treasure Hunting (1929)
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23. The Bobbsey Twins at Spruce Lake (1930)
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24. The Bobbsey Twins' Wonderful Secret (1931; Rev. ed. [The Bobbsey Twins'
Wonderful Winter Secret] 1962)
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25. The Bobbsey Twins at the Circus (1932; Rev. ed. [The Bobbsey Twins and the
Circus Surprise] 1960)
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26. The Bobbsey Twins on an Airplane Trip (1933)
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27. The Bobbsey Twins Solve a Mystery (1934)
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28. The Bobbsey Twins on a Ranch (1935)
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29. The Bobbsey Twins in Eskimo Land (1936)
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30. The Bobbsey Twins in a Radio Play (1937)
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31. The Bobbsey Twins at Windmill Cottage (1938)
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32. The Bobbsey Twins at Lighthouse Point (1939)
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33. The Bobbsey Twins at Indian Hollow (1940)
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34. The Bobbsey Twins at the Ice Carnival (1941)
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35. The Bobbsey Twins in the Land of Cotton (1942)
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36. The Bobbsey Twins in Echo Valley (1943)
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37. The Bobbsey Twins on the Pony Trail (1944)
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38. The Bobbsey Twins at Mystery Mansion (1945)
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39. The Bobbsey Twins at Sugar Maple Hill (1946)
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40. The Bobbsey Twins in Mexico (1947)
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41. The Bobbsey Twins' Toy Shop (1948)
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42. The Bobbsey Twins in Tulip Land (1949)
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43. The Bobbsey Twins in Rainbow Valley (1950)
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44. The Bobbsey Twins' Own Little Railroad (1951)
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45. The Bobbsey Twins at Whitesail Harbor (1952)
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46. The Bobbsey Twins and the Horseshoe Riddle (1953)
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47. The Bobbsey Twins at Big Bear Pond (1953)
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48. The Bobbsey Twins on a Bicycle Trip (1954)
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49. The Bobbsey Twins' Own Little Ferryboat (1956)
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50. The Bobbsey Twins at Pilgrim Rock (1957)
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51. The Bobbsey Twins' Forest Adventure (1958)
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52. The Bobbsey Twins at London Tower (1959)
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53. The Bobbsey Twins in the Mystery Cave (1960)
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54. The Bobbsey Twins in Volcano Land (1961)
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55. The Bobbsey Twins and the Goldfish Mystery (1962)
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56. The Bobbsey Twins and the Big River Mystery (1963)
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57. The Bobbsey Twins and the Greek Hat Mystery (1964)
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58. The Bobbsey Twins' Search for the Green Rooster (1965)
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59. The Bobbsey Twins and Their Camel Adventure (1966)
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60. The Bobbsey Twins' Mystery of the King's Puppet (1967)
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61. The Bobbsey Twins and the Secret of Candy Castle (1968)
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62. The Bobbsey Twins and the Doodlebug Mystery (1969)
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63. The Bobbsey Twins and the Talking Fox Mystery (1970)
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64. The Red, White, and Blue Mystery (1971)
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65. The Bobbsey Twins: Dr. Funnybone's Secret (1972)
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66. The Bobbsey Twins and the Tagalong Giraffe (1973)
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67. The Bobbsey Twins and the Flying Clown (1974)
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68. The Bobbsey Twins on the Sun-Moon Cruise (1975)
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69. The Bobbsey Twins: The Freedom Bell Mystery (1976)
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70. The Bobbsey Twins and the Smoky Mountain Mystery (1977)
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71. The Bobbsey Twins in a TV Mystery Show (1978)
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72. The Bobbsey Twins: The Coral Turtle Mystery (1979)
The Bobbsey Twins (Wanderer Books) 1980-1986
_x_ 1. The Blue Poodle Mystery (1980)
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2. Secret in the Pirate's Cove (1980)
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3. The Dune Buggy Mystery (1981)
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4. The Missing Pony Mystery (1981)
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5. The Rose Parade Mystery (1981)
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6. The Camp Fire Mystery (1982)
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7. Double Trouble (1982)
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8. Mystery of the Laughing Dinosaur (1983)
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9. The Music Box Mystery (1983)
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10. The Ghost in the Computer (1984)
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11. The Scarecrow Mystery (1984)
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12. The Haunted House Mystery (1985)
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13. The Mystery of the Hindu Temple (1985)
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14. The Grinning Gargoyle Mystery (1986)
The New Bobbsey Twins (Minstrel Books) 1987-1992
_x_ 1. The Secret of Jungle Park (Aug. 1987)
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2. The Case of the Runaway Money (Oct. 1987)
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3. The Clue That Flew Away (Dec. 1987)
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4. The Secret in the Sand Castle (Feb. 1988)
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5. The Case of the Close Encounter (Apr. 1988)
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6. Mystery on the Mississippi (June 1988)
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7. Trouble in Toyland (Aug. 1988)
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8. The Secret of the Stolen Puppies (Oct. 1988)
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9. The Clue in the Classroom (Dec. 1988)
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10. The Chocolate-Covered Clue (Feb. 1989)
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11. The Case of the Crooked Contest (Apr. 1989)
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12. The Secret of the Sunken Treasure (June 1989)
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13. The Case of the Crying Clown (Aug. 1989)
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14. The Mystery of the Missing Mummy (Oct. 1989)
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15. The Secret of the Stolen Clue (Dec. 1989)
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16. The Case of the Missing Dinosaur (Feb. 1990)
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17. The Case at Creepy Castle (Apr. 1990)
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18. The Secret at Sleepaway Camp (June 1990)
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19. The Show and Tell Mystery (Aug. 1990)
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20. The Weird Science Mystery (Oct. 1990)
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21. The Great Skate Mystery (Dec. 1990)
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22. The Super-Duper Cookie Caper (Feb. 1991)
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23. The Monster Mouse Mystery (Apr. 1991)
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24. The Case of the Goofy Game Show (June 1991)
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25. The Case of the Crazy Collections (Aug. 1991)
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26. The Clue at Casper Creek (Oct. 1991)
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27. The Big Pig Puzzle (Dec. 1991)
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28. The Case of the Vanishing Video (1992)
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29. The Case of the Tricky Trickster (1992)
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30. The Mystery of the Mixed-Up Mail (1992)
The Bobbsey Twins (Ready-to-Read) (Aladdin Paperbacks) 2005-2006
___ Freddie and Flossie (July 2005)
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Freddie and Flossie and Snap (July 2005)
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Freddie and Flossie and the Beach (July 2005)
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Freddie and Flossie and the Train Ride (July 2005)
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Freddie and Flossie and the Leaf Monster (Oct. 2005)
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Freddie and Flossie and the Little Seed (Jan. 2006)
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Freddie and Flossie and the Easter Egg Hunt (Jan. 2006)
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The Mystery of the Dinosaur in the Forest (Oct. 2005)
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The Mystery of the Ghost in the Attic (Oct. 2005)