Brazil
1991 The 150th Anniversary of the Birth of Doctor Manuel Ferraz de Campos Salles, and the 150th Anniversary of the Birth of Doctor Prudente de Moraes
1991 The 150th Anniversary of the Birth of Doctor Manuel Ferraz de Campos Salles, and the 150th Anniversary of the Birth of Doctor Prudente de Moraes
1991 The 100th Anniversary of the Bureau of Agriculture and Provision, Sao Paulo
1991 The 100th Anniversary of the Bureau of Agriculture and Provision, Sao Paulo
1991 The 100th Anniversary of the Birth of Lasar Segall, 1891-1957
1991 The 100th Anniversary of the Birth of Lasar Segall, 1891-1957
1991 National Stamp Exhibition “Brapex 91” – Vitoria, Espírito Santo, Brazil – Hummingbirds and Orchids in Mata Atlantica Forest
1991 National Stamp Exhibition “Brapex 91” – Vitoria, Espírito Santo, Brazil – Hummingbirds and Orchids in Mata Atlantica Forest
1991 National Stamp Exhibition “Brapex 91” – Vitoria, Espírito Santo, Brazil – Hummingbirds and Orchids in Mata Atlantica Forest
1991 National Stamp Exhibition “Brapex 91” – Vitoria, Espírito Santo, Brazil – Hummingbirds and Orchids in Mata Atlantica Forest
1991 International Telecommunications Exhibition “Telecom 91” – Geneva
1991 International Telecommunications Exhibition “Telecom 91” – Geneva
1991 The 100th Anniversary of the 1891 Constitution
1991 The 100th Anniversary of the 1891 Constitution
1991 Papal Visit and the 12th Anniversary of the National Eucharistic Congress, Natal
1991 Papal Visit and the 12th Anniversary of the National Eucharistic Congress, Natal