The museum’s archives can be consulted upon request, subject to the application of the transfer delays of the archival documents. They consist of three types of dossiers:

- Dossiers of works
​Documents relating directly to the work concerned: acquisition, expositions, eventual restaurations, photographic reproductions, bibliography, analogies with other works.

- Dossiers of expositions
​Documents relevant to expositions and displays organized by or in collaboration with the Balzac House.

- Administrative dossiers
​Documents relating to the management of the museum: creation of the establishment, museography, organizational projects, etc.

Several private archival collections can be consulted on the same terms and conditions as the institutional archives.