The American Chemical Society and its local sections are honoring those who have reached 50 years of membership in 2018. This year, ACS has 918 50-year members worldwide; 27 chose not to have their names listed. To commemorate reaching this milestone, ACS gives each member a 50-year certificate, a special lapel pin, and a permanent member card entitling him or her to free registration at all national and regional ACS meetings. Donald John Aberhart Shrewsbury, Mass.
