Yazar
United States Postal Service
4
Herst, Herman
2
APS Judges Accreditation Committee
1
Admas, Charles F.
1
Alvarez Pallejá, Ricardo
1
Boggs, Winthrop
1
Bonilla Lara, Alvaro
1
Ferré, Néstor M.
1
García Fernández, Miguel Ángel
1
Melville, F.J
1
Mitchell, H. Dana
1
Mueses, Danilo A.
1
Negus, James
1
Neil, Randy L.
1
O'Keefe, Donna
1
O'Neill Gómez, Fred
1
Owens, Mary Ann \ Guzzio, George
1
Phillips, Stanley
1
Society of Costa Rica Collectors
1
Sáenz Mata, Carlos
1
Sánchez Toda, José Luis
1
White, R.H
1
Williams, L.N
1
Williams, M.
1