Distribution map for <i>Cupressus goveniana</i> (Gowen cypress)
James R. Griffin &amp;  William B. Critchfield
1972
<a rel="nofollow" class="external text" href="http://www.fs.fed.us/psw/publications/documents/psw_rp082/psw_rp082.pdf"><i>The distribution of forest trees in California.</i> Berkeley: U.S.D.A. Forest Service. 1972</a> (modified by the uploader for clarity)