Data of recent papers are available in Dryad.

Yasuhara et al. (2009) PNAS
http://hurricane.ncdc.noaa.gov/pls/paleo/contribseries.search
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yasuhara2009/yasuhara2009.txt
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yasuhara2009/yasuhara2009.xls

Yasuhara et al. (2008) PNAS

http://hurricane.ncdc.noaa.gov/pls/paleo/contribseries.search
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yasuhara2008/yasuhara2008.txt
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yasuhara2008/yasuhara2008.xls