Robert C. Stebbins/ Samuel M. McGinnis
(3)
Robert C. Stebbins/ Nathan W. Cohen
(1)
Roger Conant/ Robert C. Stebbins/ Joseph T. Collins
(1)
Sarah Anne Hughes/ Roger Tory Peterson Institute (EDT)/ Robert C. Stebbins (EDT)/ Conant
(1)
Sarah Anne Hughes/ Sarah Anne Hughes (ILT)/ Roger Tory Peterson (EDT)/ Roger Conant (EDT)/ Robert C. Stebbins (EDT)
(1)