Books about Cousins -- Juvenile fiction (sorted alphabetically)
- Jean qui grogne et Jean qui rit (French) comtesse de Sophie Ségur
- Just Gerry Christine Chaundler
- Just Sixteen. Susan Coolidge
- Kahdeksan serkusta (Finnish) Louisa May Alcott
- Kun ruusu puhkeaa (Finnish) Louisa May Alcott
- Lady of the Forest: A Story for Girls L. T. Meade
- Leila at Home Ann Fraser Tytler
- Lily's birthday Madeline Leslie
- Little Country Girl Susan Coolidge
- Little Frankie and His Cousin Madeline Leslie
- Little Miss Dorothy: The Story of the Wonderful Adventures of Two Little People Martha James
- Little Princess of Tower Hill L. T. Meade
- Little Prudy's Captain Horace Sophie May
- Little Prudy's Cousin Grace Sophie May
- Little Queen of Hearts: An International Story Ruth Ogden
- little town mouse Eleanora H. Stooke
- Mammy Tittleback and Her Family: A True Story of Seventeen Cats Helen Hunt Jackson
- Mildred and Elsie Martha Finley
- Mislaid Uncle Evelyn Raymond
- Miss Lochinvar: A Story for Girls Marion Ames Taggart
- Miss Mouse and Her Boys Mrs. Molesworth
- Mitä Katy teki: Kertomus (Finnish) Susan Coolidge
- My New Home Mrs. Molesworth
- My Young Days Anonymous
- Naughty Miss Bunny Clara Mulholland