Donald R. Prothero/ Carl Buell (ILT)
(2)
Donald R. Prothero/ Timothy D. Callahan/ Michael Shermer (FRW)
(2)
Kate LoMedico Marriott,Alexander Bartholomew,Donald R. Prothero
(2)
Daniel Loxton/ Donald R. Prothero
(1)
Daniel Loxton/ Donald R. Prothero/ Michael Shermer (FRW)
(1)
Donald R. Prothero (EDT)/ Robert M. Schoch (EDT)
(1)
Donald R. Prothero (EDT)/ Scott E. Foss (EDT)
(1)
Donald R. Prothero/ Fred Schwab
(1)
Donald R. Prothero/ John Bishop (NRT)
(1)
Donald R. Prothero/ Mary P. Persis Williams (ILT)
(1)
Donald R. Prothero/ Michael Shermer (FRW)/ Pat Linse (ILT)
(1)
Donald R. Prothero/ Robert M. Schoch
(1)