The Trina Padilla de Sanz papers date from 1845 to 1968, with the majority of records dating from 1902 to 1957, and document the life and literary career of Puerto Rican poet, writer, suffragist, and composer Trina Padilla de Sanz. The collection consists mostly of correspondence, original manuscripts, and printed works and also contains a small number of photographs and family papers.

The collection is arranged into three series: "I. Correspondence, 1845-1957 (Bulk: 1902-1957)", "II. Writings, 1910-1966 (Bulk: 1910-1956)", and "III. Personal and family papers, 1905-1968".

Series "I. Correspondence” dates from 1845 to 1957, with the majority of correspondence dating from 1902 to 1957, and consists of correspondence with friends, family, and notable musicians, poets, politicians, and writers of her day. Prominent correspondents include, but are not limited to: Luis Llorens Torres, a well-respected Puerto Rican poet, playwright, and politician; Luis Muñoz Marin, the first democratically elected governor of Puerto Rico; Cayetano Coll y Toste, an esteemed Puerto Rican historian and writer; José de Diego y Martinez, a statesman and journalist known as the “Father of the Puerto Rican Independence Movement”; Gabriela Mistral, the first Latin American to win the Nobel Prize in Literature; Manuel Fernandez Juncos, a Spanish journalist and poet who wrote the lyrics to Puerto Rico’s official anthem “La Borinqueña"; Braulio Dueño Colón, co-writer of the song series “Canciones Escolares” and lauded as one of Puerto Rico’s greatest composers; and Lola Rodriguez de Tio, the first Puerto Rican-born poetess to achieve widespread acclaim throughout Latin America. Other noteworthy correspondence includes a letter penned by José Gualberto Padilla, known as “El Caribe”, in 1845 and correspondence between La Hija and her son, Angel A. Sanz Padilla, and daughter, Amalia "Malín" Sanz Padilla. This series is arranged alphabetically by correspondent.

Series “II. Writings” dates from 1910 to 1966, with the majority of writings dating from 1910-1956, and consists of articles, essays, poems, short stories, and open letters in both manuscript and printed formats. The series also contains newspaper and magazine clippings of La Hija’s work, writing fragments, and a small number of articles published after her death. Featured in this series are La Hija’s published works in several prominent Puerto Rican magazines, includingAlma Latina,Condor Blanco,Heraldo de la Mujer, andPuerto Rico Ilustrado. This series is arranged alphabetically by title.

Series “III. Personal and family papers” dates from 1905 to 1968 and contains newspaper and magazine clippings related to La Hija and her family, writings about La Hija, photographs, keepsakes and ephemera, a scrapbook documenting La Hija’s musical career, and a small number of papers belonging to her son, Angel A. Sanz Padilla. This series is arranged alphabetically by record type and chronologically thereunder.

This collection will be useful for researchers interested in the social, cultural, political, and economic issues specific to Puerto Rico during the first half of the twentieth century. It provides in-depth insight into a variety of topics of the pressing current events of that era. For researchers focused on the feminist movement, this collection offers insight into the role of women in society, inequality between genders, and domestic affairs. For those interested in the political sphere, La Hija’s writings contain analyses of not only Puerto Rican liberation efforts, but also the dynamic between the country and more powerful foreign influences, specifically the United States. Researchers who wish to study social problems faced by Puerto Rico will find various articles penned by La Hija related to poverty, wealth disparity, divorce, the death penalty, and juvenile delinquency.