Sources that document the early years of the College of the City of New York before it moved to the St. Nicholas Heights campus are housed at the CCNY campus archives along with miscellaneous items which are on-line through the Hathitrust databases.
Primary sources that are on Hathitrust include:
Catalog of the Free Academy of New York 1860-1922.
Annual Report of the Faculty 1868-1870.
Annual Register of the College of the City of New York,1867/68; 1873/74; 1878/79; 1881/82; 1906/7-1907-1908; 1917/18-1919-20.
The City College Quarterly
College Mercury 1880-1895—