Letter from Ted Pack to Gertrude Elion, November 1997 Back to content Letter from Ted Pack to Gertrude Elion, November 1997. Courtesy of the Estate of Gertrude B. Elion. Print Full Image Date / time November 1997 Institution Estate of Gertrude B. Elion Author(s) Pack, Ted Related contentDocument study: Letters from Ted Pack to Gertrude Elion