| 1 | The Bobbsey Twins, or Merry Days Indoors and Out | | GF | 1904 |  |
| 2 | The Bobbsey Twins in the Country | | GF | 1907 | |
| 3 | The Bobbsey Twins at the Seashore | | GF | 1907 | |
| 4 | The Bobbsey Twins at School | | GF | 1913 | |
| 5 | The Bobbsey Twins at Snow Lodge | | GF | 1913 | |
| 6 | The Bobbsey Twins on a Houseboat | | GF | 1915 | |
| 7 | The Bobbsey Twins at Meadow Brook | | GF | 1915 | |
| 8 | The Bobbsey Twins at Home | | GF | 1916 | |
| 9 | The Bobbsey Twins in a Great City | | GF | 1917 | |
| 10 | The Bobbsey Twins on Blueberry Island | | GF | 1917 | |
| 11 | The Bobbsey Twins on the Deep Blue Sea | | GF | 1918 | |
| 12 | The Bobbsey Twins in Washington | | GF | 1919 | |
| 13 | The Bobbsey Twins in the Great West | | GF | 1920 | |
| 14 | The Bobbsey Twins at Cedar Camp | | GF | 1921 | |
| 15 | The Bobbsey Twins at the County Fair | | GF | 1922 | |
| 16 | The Bobbsey Twins Camping Out | | GF | 1923 | |
| 17 | The Bobbsey Twins and Baby May | | GF | 1924 | |
| 18 | The Bobbsey Twins Keeping House | | GF | 1925 | |
| 19 | The Bobbsey Twins at Cloverbank | | GF | 1926 | |
| 20 | The Bobbsey Twins at Cherry Corners | | GF | 1927 | |
| 21 | The Bobbsey Twins and their Schoolmates | | GF | 1928 | |
| 22 | The Bobbsey Twins Treasure Hunting | | GF | 1929 | |
| 23 | The Bobbsey Twins at Spruce Lake | | GF | 1930 | |
| 24 | The Bobbsey Twins' Wonderful Secret | | GF | 1931 | |
| 25 | The Bobbsey Twins at the Circus | | GF | 1932 | |
| 26 | The Bobbsey Twins on an Airplane Trip | | GF | 1933 | |
| 27 | The Bobbsey Twins Solve a Mystery | | GF | 1932 | |
| 28 | The Bobbsey Twins on a Ranch | | GF | 1935 | |
| 29 | The Bobbsey Twins in Eskimo Land | | GF | 1936 | |
| 30 | The Bobbsey Twins in a Radio Play | | GF | 1937 | |
| 31 | The Bobbsey Twins at Windmill Cottage | | GF | 1938 | |
| 32 | The Bobbsey Twins at Lighthouse Point | | GF | 1939 | |
| 33 | The Bobbsey Twins at Indian Hollow | | GF | 1940 | |
| 34 | The Bobbsey Twins at the Ice Carnival | | GF | 1941 | |
| 35 | The Bobbsey Twins in the Land of Cotton | | GF | 1942 | |
| 36 | The Bobbsey Twins in Echo Valley | | GF | 1943 | |
| 37 | The Bobbsey Twins on the Pony Trail | | GF | 1944 | |
| 38 | The Bobbsey Twins at Mystery Mansion | | GF | 1945 | |
| 39 | The Bobbsey Twins at Sugar Maple Hill | | GF | 1946 | |
| 40 | The Bobbsey Twins in Mexico | | GF | 1947 | |
| 41 | The Bobbsey Twins' Toy Shop | | GF | 1948 | |
| 42 | The Bobbsey Twins in Tulip Land | | GF | 1949 | |
| 43 | The Bobbsey Twins in Rainbow Valley | | GF | 1950 | |
| 44 | The Bobbsey Twins' Own Little Railroad | | GF | 1951 | |
| 45 | The Bobbsey Twins at Whitesail Harbor | | GF | 1952 | |
| 46 | The Bobbsey Twins and the Horseshoe Riddle | | GF | 1953 | |
| 47 | The Bobbsey Twins at Big Bear Pond | | GF | 1953 | |
| 48 | The Bobbsey Twins on a Bicycle Trip | | GF | 1954 | |
| 49 | The Bobbsey Twins' Own Little Ferryboat | | GF | 1956 | |
| 50 | The Bobbsey Twins at Pilgrim Rock | | GF | 1956 | |
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