Laura Lee Hope is a pseudonym used by the Stratemeyer Syndicate for the Bobbsey Twins and several other series of children's novels. Actual writers taking up the pen of Laura Lee Hope include Edward Stratemeyer, Howard and Lilian Garis, Elizabeth Ward, Harriet (Stratemeyer) Adams, Andrew E. Svenson, June M. Dunn, Grace Grote and Nancy Axelrad. Laura Lee Hope was first used in 1904 for the debut of the Bobbsey Twins, the principal characters of what was, for many years, the Stratemeyer Syndicate's longest-running series of children's novels. Other series written under this pseudonym include: The Outdoor Girls (23 vols. 1913-1933), The Moving Picture Girls (7 vols. 1914-1916), Bunny Brown (20 vols. 1916-1931), Six Little Bunkers (14 vols. 1918-1930), Make Believe Stories (12 vols. c. 1920-1923), and Blythe Girls (12 vols. 1925-1932). The first of the 72 books of the Bobbsey Twins series was published in 1904, the last in 1979. The books related the adventures of the children of the middle-class Bobbsey family, which included two sets of mixed-gender fraternal twins: Bert and Nan, who were 12 years old, and Flossie and Freddie, who were six. Edward Stratemeyer himself is believed to have written the first volume in its original form in 1904. When the original series was brought to its conclusion in 1979, it had reached a total of 72 volumes. At least two abortive attempts to restart the series were launched after this, but in neither effort was the popularity of the original series achieved. Speculation that Stratemeyer also wrote the second and third volumes of the series is believed to be incorrect; these books are now attributed to Lilian Garis, wife of Howard Garis, who is credited with volumes 4–28 and 41. Elizabeth Ward is credited with volumes 29–35, while Harriet Stratemeyer Adams is credited with 36–38, 39 (with Camilla McClave), 40, 42, 43 (with Andrew Svenson), and 44–48. Volumes 49–52 are attributed to Andrew Svenson, while 53–59, and the 1960s rewrites of 1–4, 7, 11–13, and 17, are attributed to June Dunn. Grace Grote is regarded as the real author of 60–67 and the rewrites of 14 and 18–20, and Nancy Axelrad is credited with 68–72. Of the 1960s rewrites not already mentioned, volumes 5 and 16 are credited to Mary Donahoe, 6 and 25 to Patricia Doll, 8–10 and 15 to Bonnibel Weston, and 24 to Margery Howard. —from Wikipedia
Series
Books

The Bobbsey Twins Collection, Volume 1
Merry Days Indoors and Out; in the Country; at the Seashore
2010

Misteri Camp Fire
1982

The Coral Turtle Mystery
1978

The Bobbsey Twins And The Secret of Candy Castle
1968

Bunny Brown and His Sister Sue at Aunt Lu's City Home
2015

The Bobbsey Twins at Mystery Mansion
1930

The Grinning Gargoyle Mystery
1986

The Outdoor Girls of Deepdale; or, Camping and Tramping for Fun and Health
1913

The Outdoor Girls in a Motor Car; or, The Haunted Mansion of Shadow Valley
1913

The Moving Picture Girls at Oak Farm; or, Queer Happenings While Taking Rural Plays
1914

The Outdoor Girls at Rainbow Lake; or, The Stirring Cruise of the Motor Boat Gem
1913

The Bobbsey Twins' Own Little Railroad
1951

Helen's Wonderful Mistake; or, The Mysterious Necklace
1932

The Case of the Vanishing Video
1992

The Mystery of the Ghost in the Attic
2005

The Freedom Bell Mystery
1975

The Bobbsey Twins and the Mystery at Snow Lodge
1913

The Chocolate-Covered Clue
1989

The Story of a Woolly Dog
1900

The Bobbsey Twins and Their Schoolmates
1928

The Bobbsey Twins' Adventure in Washington
1919

The Story of a Candy Rabbit
1920

The Bobbsey Twins at Whitesail Harbor
1952

The Bobbsey Twins At Pilgrim Rock
1957

The Story of a Monkey on a Stick
1920

Bunny Brown and His Sister Sue and Their Trick Dog
1923

Bunny Brown and His Sister Sue Giving a Show
1919

The mystery of the Hindu temple
1985

The Outdoor Girls in Army Service; or, Doing Their Bit for the Soldier Boys
1918

The Outdoor Girls at New Moon Ranch; or, Riding with the Cowboys
1928

The Moving Picture Girls; or, First Appearance in Photo Dramas
1914

The Bobbsey Twins Keeping House
1925

The Bobbsey Twins' Mystery at School
1913

The Blythe Girls
1925

The Bobbsey Twins' Wonderful Winter Secret
1931

The Outdoor Girls at the Hostess House; or, Doing Their Best for the Soldiers
1919

The Bobbsey Twins' Forest Adventure
1957

The Bobbsey Twins at Spruce Lake
1930

The Bobbsey Twins at the Ice Carnival
1941

Freddie and Flossie and the Train Ride
2005

Bobbsey Twins On An Airplane Trip
1933

The Bobbsey Twins and the Horseshoe Riddle
1953

The Outdoor Girls in a Winter Camp; or, Glorious Days on Skates and Ice Boats
1913

The Bobbsey Twins And Their Camel Adventure
1966

The Bobbsey Twins In the Mystery Cave
1960

The Bobbsey Twins' Own Little Ferryboat
1956

Case Of The Goofy Game Show
1991

The Mystery of the Missing Mummy
1989

The Bobbsey Twins and the Greek Hat Mystery
1964

Freddie and Flossie and the Leaf Monster
2005

The Bobbsey Twins at Cherry Corners
1927

The Outdoor Girls in the Saddle; or, The Girl Miner of Gold Run
1922

Bunny Brown and His Sister Sue at Christmas Tree Cove
2015

The Bobbsey Twins Camping Out
1923

The Blythe Girls
Margy's Queer Inheritance; or, The Worth of a Name
1925

The Outdoor Girls at Wild Rose Lodge; or, The Hermit of Moonlight Falls
1921

Bunny Brown and His Sister Sue in the Sunny South
1921

The Bobbsey Twins Toy Shop
1948

Trouble in Toyland
1988

Double Trouble
1983

The Story of a Stuffed Elephant
1922

Freddie and Flossie at the Beach
2005

The Case of the Runaway Money
1987

The Bobbsey Twins of Lakeport
1904

Mystery on the Mississippi
1988

The Missing Pony Mystery
1981

The Story of a Plush Bear
1921

Secret in the Pirate's Cave
1980

The Bobbsey Twins And The Flying Clown
1974

Bunny Brown and His Sister Sue and Their Shetland Pony
2015

The Bobbsey Twins And The Cedar Camp Mystery
1921

The Blythe Girls
Rose's Great Problem; or, Face to Face With a Crisis
1925

The Case of the Crooked Contest
1989

The Bobbsey Twins' Adventures of Baby May
1924

The Moving Picture Girls at Rocky Ranch; or, Great Days Among the Cowboys
1914

The Bobbsey Twins On A Bicycle Trip
1954

The Bobbsey Twins on a Houseboat
1915

The Bobbsey Twins Series
2009

The Bobbsey Twins At Indian Hollow
1940

The Bobbsey Twins In A TV Mystery Show
1978

The Clue at Casper Creek
1991

The Secret of the Stolen Clue
1989

The Bobbsey Twins' Search for the Green Rooster
1964

The Secret At Sleepaway Camp
1990

The Bobbsey Twins In the Land of Cotton
1942

The Story of a Nodding Donkey
1921

The Bobbsey Twins' Visit to the Great West
1920

The Story of a China Cat
2007

The Bobbsey Twins and the Doodlebug Mystery
1969

The Blythe Girls
Helen's Strange Boarder; or, The Girl from Bronx Park
1925

The Bobbsey Twins MEGAPACK ®
15 Classic Children's Novels
2014

Bunny Brown and His Sister Sue
1916

The Bobbsey Twins And The Tagalong Giraffe
1973

Bunny Brown and His Sister Sue on Grandpa's Farm
1916

The Bobbsey Twins in Echo Valley
1943

The Bobbsey Twins on a Ranch
1935

The Story Of A Lamb On Wheels
1920

The Bobbsey Twins' Mystery of the King's Puppet
1967

The Bobbsey Twins in Eskimo Land
1913

The Bobbsey Twins At Big Bear Pond
1953

The Outdoor Girls in Desert Valley; or, Strange Happenings in a Cowboy Camp
1933

The Monster Mouse Mystery
1991

The Bobbsey Twins' Big Adventure at Home
1916

The Moving Picture Girls in War Plays; or, The Sham Battles at Oak Farm
1916

The Story Of A Bold Tin Soldier
1920

The Bobbsey Twins and the Four-leaf Clover Mystery
1926

Bunny Brown and his Sister Sue at the Summer Carnival
1931

The Smoky Mountain Mystery
1976

The Case of the Close Encounter
1988

The Bobbsey Twins Treasure Hunting
1929

The Rose Parade Mystery
1981

The Outdoor Girls at Foaming Falls; or, Robina of Red Kennels
1925

The Great Skate Mystery
1990

The Moving Picture Girls Snowbound; or, The Proof on the Film
1914

The Bobbsey Twins at Windmill Cottage
1938

The Outdoor Girls at Spring Hill Farm; or, The Ghost of the Old Milk House
1927

The Secret at the Seashore
1907

The Blythe Girls
The Disappearance of Helen; or, The Art Shop Mystery
1928

The Music Box Mystery
1983

The Bobbsey Twins At Light House Point
1939

The Bobbsey Twins and the Goldfish Mystery
1962

The Outdoor Girls in Florida; or, Wintering in the Sunny South
1913

The Ghost in the Computer
1984

The Bobbsey Twins in Mexico
1947

The Bobbsey Twins And The Circus Surprise
1932

The Outdoor Girls at Bluff Point; or, A Wreck and a Rescue
1920

The Bobbsey Twins In Volcano Land
1961

The Bobbsey Twins on Blueberry Island
1917

The Secret of the Stolen Puppies
1988

Bunny Brown and His Sister Sue in the Big Woods
2015

The Red, White and Blue Mystery
1971

The Moving Picture Girls at Sea; or, A Pictured Shipwreck That Became Real
1915

Mystery of the Laughing Dinosaur
1983

The Secret of Jungle Park
1987

The Bobbsey Twins And The Talking Fox Mystery
1970

The Outdoor Girls at Ocean View; or, The Box That Was Found in the Sand
1915

The Bobbsey Twins in a Radio Play
1937

The Mystery of the Mixed Up Mail
1992

Clue In The Classroom
1988

The Bobbsey Twins and the Big River Mystery
1962

The Bobbsey Twins' Mystery at Meadowbrook
1915

The Bobbsey Twins at the County Fair
1922

The Bobbsey Twins' Adventure in the Country
1907

Super-Duper Cookie Caper
1991

Dr. Funnybone's Secret
1972

The Bobbsey Twins On The Sun-Moon Cruise
1975

The Secret in the Sand Castle
1988

The Bobbsey Twins at Sugar Maple Hill
1946

The Bobbsey Twins At London Tower
1959

Freddie and Flossie and the Little Seed
2006

The Story of a Sawdust Doll
1920

The Bobbsey Twins In Rainbow Valley
1950

The Case of the Disappearing Dinosaur
1990

The Bobbsey Twins' Mystery on the Deep Blue Sea
1918

The Bobbsey Twins in Tulip Land
1949

The Blue Poodle Mystery
1980

Margy's Mysterious Visitor; or, Guarding the Pepper Fortune
1930

The Bobbsey Twins' Search in the Great City
1913

Freddie and Flossie and Snap
2005

The Bobbsey Twins on the Pony Trail
1944

The Case of the Crying Clown
1989

Bunny Brown and His Sister Sue at Camp Rest-A-While
1916

The Haunted House Mystery
1985

Bunny Brown and His Sister Sue at Shore Acres
1928

The Bobbsey Twins Solve a Mystery
1934