Past Directors
![Paul Kotin, M.D.](https://webarchive.library.unt.edu/web/20130318052120im_/http://@niehs.nih.gov/about/od/pastdirectors/paul_kotin_md.jpg)
Paul Kotin, M.D. (http://www.niehs.nih.gov/news/newsletter/2008/june/director.cfm)
NIEHS Director 1968–1971
![David P. Rall, M.D., Ph.D.](https://webarchive.library.unt.edu/web/20130318052120im_/http://@niehs.nih.gov/about/od/pastdirectors/david_p_rall_md_phd.jpg)
David P. Rall, M.D., Ph.D.
NIEHS Director 1971–1990
NTP Director 1978–1990
![Kenneth Olden, Ph.D., Sc.D., L.H.D.](https://webarchive.library.unt.edu/web/20130318052120im_/http://@niehs.nih.gov/about/od/pastdirectors/kenneth_olden_phd_scd_lhd_.jpg)
Kenneth Olden, Ph.D., Sc.D., L.H.D.
NIEHS and NTP Director
1991–2005
![David A. Schwartz, M.D., M.P.H.](https://webarchive.library.unt.edu/web/20130318052120im_/http://@niehs.nih.gov/about/od/pastdirectors/david_a_schwartz_md_mph.jpg)
David A. Schwartz, M.D., M.P.H.
NIEHS and NTP Director
2005–2007