Elsie Dinsmore is a children's book series written by Martha Finley (1828–1909) between 1867 and 1905. Of Finley's two girls' fiction series, the "Mildred Keith" books were more realistic and autobiographical in nature, while the "Elsie Dinsmore" books, which were better sellers, were more idealistic in plot.[1] A revised and adapted version of the Elsie books was published in 1999.