I 027.074
Dow
R
Downs , Robert Bigham , 1903-
Resources of New York city libraries , a supvery of facilities of advanced study and research , by Robert B. Downs... Sponsored by the A.L. A. Board on resources of American libraries. Chicago , American libraries . Chicago , American library association , 1942. 
xiii , 442 p. , 11. 23 cm. 
Bibliography : p. 309- 403.