Kenneth Peck counting rings and explaining Phloem necrosis disease to his nature study class.. Daniel Boone elm seedling. 45 years old. MBG Bull 56(6):9 (Nov.-Dec. 1968). Photo by Renyold Ferguson. St. Louis Post-Dispatch.
Ken Peck, head instructor, teaching Pitzman summer school 1967. MBG Bull 57(1):5 (Jan. 1969). Negative available at PHO 2005-0875 and PHO 2005-0955. Same as PHO 2005-1008.