Silver anniversary, Arthur W. Proetz, A.B., M.D., Sc. D.
D000846:Anniversaries and Special Events; D004396:Coloring Agents; D005197:Famous Persons; D049672:History, 19th Century; D049673:History, 20th Century; D012834:Silver
D004396:Coloring Agents; D012834:Silver
FAMOUS PEOPLE