These tree-ring data files were downloaded from the International Tree Ring Data Bank 
ITRDB Version 7.10 (December 2015) at:

ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/

The files contain references to the locations and the original contributors who should 
be cited when using this data. 

Files NY003, NY005, NY006, NY0011 contain data collected by E.R. Cook (Lamont-Doherty 
Earth Observatory) at Mohonk Lake, Mohonk Preserve, New York.

References:

Grissino-Mayer, H.D., and Fritts, H.C. 1997. The International Tree-Ring
Data Bank: an enhanced global database serving the global scientific
community.  The Holocene 7,2  pp. 235-238.

Cook, E.R., and Kairiukstis, L.A., eds. 1990.  Methods of 
Dendrochronology.  Kluwer Academic Publishers, 101 Philip Drive, 
Norwell, MA 02061 USA, or P.O. Box 17, 3300 AA Dordrecht, The 
Netherlands.

Fritts, H. C. 1976.  Tree Rings and Climate.  Academic Press LTD., 
24/28 Oval Road, London NW1, or 111 Fifth Avenue, New York NY 
10003.

Hughes, M.K. et al. 1982.  Climate from Tree Rings.   Cambridge 
University Press, Cambridge, UK.