Series: 1. Accessions, 1851-1949
Scope and Content Note: This series is comprised of ledgers used to record the accessions made to the library. Included are primarily books and periodicals that were added to the collection, but some ledgers record occasional maps and exchange copies. The accessions include both donations and purchases. The volume numbers reflect an organizational scheme that was put in place in the 1940s or 1950s.

Vol. 40a Invoice Book: Geographical Rooms, 1851-1873
Physical Description: 1 volume 

Vol. 40b List of Books in AGS Library, circa 1857
Physical Description: 1 volume 

Vol. 41 Maps, Books, Periodical Articles, and Pamphlets Received, 1856-1859
Physical Description: 1 volume 

Vol. 42 Donations to the Library, 1859-1867
Physical Description: 1 volume 

Vol. 43 Accessions, 1867-1869
Physical Description: 1 volume 

Vol. 44 Purchases, 1869-1874
Physical Description: 1 volume 

Vol. 45 Donations, 1869-1874
Physical Description: 1 volume 

Vol. 46 Gifts, Exchanges, Purchases, 1875-1884
Physical Description: 1 volume 

Vol. 47 Gifts and Purchases, 1884-1886
Physical Description: 1 volume 

Vols. 48-54 Accessions, 1887-1916
Physical Description: 7 volumes 

Vol. 55 Record of Orders, 1918-1930
Physical Description: 1 volume 

Vols. 56-60 Serial Accessions, 1887-1915
Physical Description: 5 volumes 

Serial Accessions, 1887-1949