The problem of cooperative medicine,

"Prepared with the assistance of the Federal works agency, Work projects administration, Official project no. 65-1-97-21 ("Bibliographies and indices of special subjects," sub-phase "Literary development of cooperative principles and data")"

The Old Dominion journal of medicine and surgery.

Mode of access: Internet.

The Quarterly journal of medicine

Vols. 1-12 edited by William Osler

McGuffey's eclectic spelling-book.

Mode of access: Internet.

The eclectic complete geography.

Mode of access: Internet.