A rare and attractive collection of original early 20th century postcards from Rio de Janeiro, dating from approximately 1900 to 1915. The cards depict a variety of iconic locations, including Quinta da Boa Vista, the Escola Militar do Brasil, the Conselho Municipal, and scenic views of the surrounding landscape and bay. All postcards are postally used and retain their original Brazilian stamps and postmarks, with international destinations such as New York and Paris, reflecting genuine transatlantic correspondence of the period. Several examples feature handwritten messages in French, which was commonly used in international communication at the time and adds an extra layer of historical authenticity. The overall condition is good considering age, with typical signs of wear such as light staining, minor creases, and handling marks. This collection offers a compelling combination of topographical imagery, architectural interest, and postal history, making it particularly appealing to collectors of early postcards, travel memorabilia, and historical correspondence.