Avinoff becomes Director of the Museum and Ottmar and Hanne von Fuehrer join the staff of the Museum as preparators and artists Post navigation Previous Article Previous Article: Leroy K. Henry (1905-1983) becomes Jennings’ assistant in BotanyNext Article Next Article: Avinoff, Jennings, Henry, and the Garden Club of Allegheny County (GCAC) start to discuss constructing a botanical group. Avinoff, and others, accept the offer of the GCAC to construct the first diorama.