A representative to the Malolos Congress in 1898, Pardo de Tavera gave up his position in the Aguinaldo government to campaign for cooperation under American sovereignty. In 1899 he founded La Democracia, the first pro-American daily in the country, and in 1901 was appointed member of the Philippine Commission. He is also known for his scholarly studies on Philippine history, customs and manners, numerals, tribes, and medicinal plants, as well as the maps of Murillo Velarde. Noted physician, bibliophile, bibliographer, and scholar, Trinidad Hermenegildo Pardo de Tavera was a representative to the Malolos Congress in 1898 and Director of Diplomacy of the Republic, but resigned from this position a month in order to campaign fot cooperation under American sovereignty. In 1899, he founded the first pro-American daily in the country, La Democracia, which became the organ of the Federal Party. He was appointed member of the Philippine Commission in 1901. A former Director of the Philippine Library and Museum, he is best known for his scholarly studies on Philippine history, alphabets, manners and customs of the Filipinos, the origin of their numerals, the etymology of Philippine tribes, medicinal plants and maps of P. Murillo Velarde. "Celebracion del cuarto centenario del descubrimiento de Filipinas por Fernando de Magallanes, 1521-1921".