Her books include: Little Folks in Feathers and Fur (1879), Queer Pets at Marcy’s (1880), Little People of Asia (1882), Birds’ Ways (1885), In Nesting Time (1888), and also a serial story entitled, "Nimpo’s Troubles", published in the St. Nicholas Magazine, in 1874.

Exceedingly diffident, avoiding as far as she could all association with others, finding no sympathy with her peculiar tastes at home, she shrank more and more into herself, and lived more and more in her books.

[3] She never sent anything to the press till nearly twenty years old, when she began writing short anonymous letters to the daily papers, on subjects of passing interest.

Toward the latter part of this domestic period, she began to write an occasional letter to a paper, when feelings grew too strong for silence.

[5] Gradually, she drifted into sketches of natural history, having a fresh, vivid way of depicting the personality of bird or beast, that made it an acquaintance at once, and proved irresistible to every youngster.

These early sketches, published everywhere, were collected in 1873 and made into a book which had a steady, regular sale, Little Folk in Feathers and Fur, appearing in the mid-1870s.

Meanwhile, she wrote her first long story, "Nimpo's Troubles," which ran as a serial in St. Nicholas Magazine during its first years.

[11] In 1901, along with Mabel Osgood Wright and Florence Merriam Bailey, Miller became one of the first three women raised to elective membership in the American Ornithologists' Union.