Laura Waterman/ Guy Waterman
(2)
Dick Bancroft (PHT)/ Laura Waterman Wittstock/ Rigoberto Menchu Tum (INT)
(1)
Guy Waterman/ Laura Waterman
(1)
Guy Waterman/ Laura Waterman/ Bill McKibben (FRW)
(1)
Laura Waterman/ Guy Waterman/ Michael Wejchert/ Sara Garlick (FRW)
(1)