Photos by W. Mark and J. Reimer.
Reimer, Jeffrey L. and W. Mark. "SelecTree: A Tree Selection Guide." http://selectree.calpoly.edu/ (Date Visited in the format: 17 Apr. 2003).
(source URL: http://selectree.calpoly.edu/photos.lasso?rid=777&-session=selectree:D809CD160a543273E4tJY12EF31B)