Ellis Library, the main library on the MU campus, is located on Lowry Mall between Memorial Union and Jesse Hall. Ellis Library contains the principal resources for research in the humanities, the social sciences, and the basic sciences. Six additional branch libraries hold most material pertaining to health sciences, veterinary medicine, geology, engineering, math, and journalism. Two off-site storage facilities (the Annex and the UM Libraries Depository) hold the bulk of the libraries' older volumes. The holdings of the main library, branches and off-site storage facilities amount to over three million volumes and six million microforms.