Epifanio was a young associate editor of the revolutionary paper "La Independencia"(1898), writing in prose under the pen name G. Solon and also a member of the Malolos Congress. He also co-founded other newspapers like "La Libertad", "El Renaciemento", "La Democracia", "La Patria" and "Malaysia". He also made valuable publications namely; "Algo de Prosa" (1909), "Literatura Tagala" (1911), "El Teatro Tagala" (1911) "Nuestra Literatura" (1913), "El Proceso del Dr. José Rizal" (1914), "Folklore Musical de Filipinas" (1920). He also authored "Filipinos y filipinistas" (Filipinos and Filipinists), "Filipinas para los Filipinos", "Cuentos y paisajes Filipinos" (Philippine Stories and Scenes) and "Criminality in the Philippines" (1903–1908).