At head of title, no. 3- : New York University.
No. 4 compiled by the Catalogue Dept., Washington Square Library, New York University; no. 5, compiled by A. L. Rabinovitz.
No. 5- has imprint: New York, William-Frederick Press.
"A series of selected portions of the Index to early American periodical literature, a collection of materials in the New York University Libraries."