The Quapaw language is well-documented in field notes and publications from many individuals including by George Izard in 1827, by Lewis F. Hadly in 1882, from 19th-century
linguist James Owen Dorsey, in 1940 by
Frank Thomas Siebert, and, in the 1970s by linguist Robert Rankin. The Quapaw language does not conform well to English language phonetics, and a writing system for the language has not been formally adopted. All of the existing source material on the language utilizes different writing systems, making reading and understanding the language difficult for the novice learner. To address this issue, an online dictionary of the Quapaw language is being compiled which incorporates all of the existing source material known to exist into one document using a version of the
International Phonetic Alphabet which has been adapted for Siouan languages. == Revitalization ==