The Mary Terronez papers date from 1936 to 2018 and measure 5 linear inches. The biographical information folder includes copies of her birth certificate and certificate of naturalization, and resumes from different time periods in her life.

The Cook's Point economic survey conducted by Reverend William O'Connor and members of the Human Relations Club of St. Ambrose College in Davenport, Iowa, describes the living conditions and history of the settlement. This folder also contains a copy of a series of articles written in 1963 by Reverend O'Connor for the Tri-City Labor Times entitled, "Racial Injustice in Iowa." In No.15, O'Connor describes the speech Terronez made in defense of the Cook's Point residents.

The letters of recommendation include a letter from Sister Irene Munoz concerning Mary Terronez's work with the Muscatine Migrant Committee from 1977 to 1978.

The newspaper clippings include articles about the Terronez family, the League of United Latin American Citizens (LULAC) festivals, local activism related to the grape boycott campaign and migrant worker issues. A 1974 article entitled, "Reflections of a Mexican Heritage" describes the master's art project of Irene Terronez, daughter of Mary Terronez.

The materials pertaining to Mary Terronez's husband, Felipe Bravo Terronez, include photocopies of: a newspaper clipping about the Mexican All-Stars baseball team he played on in the 1920s. A 1936 seniority list for the Rock Island Line, Illinois Division, Maintenance of Way Department, which lists Mary Terronez's husband Felipe Bravo Terronez and her father Dionisio Ramirez, is also included.

The folder on John Terronez includes newspaper articles and memorial tributes. He served as state director of Iowa LULAC from 1968 to 1970, and also chaired the Quad City Grape Boycott Committee duirng that period. In 1970, he was recruited by the U.S. Department of Justice to work as a conciliator in its Community Relations Service. He received a distinguished service award in 1979 for his role the previous year in the "Longest Walk"-a Native American protest march from Los Angeles to Washington, DC. John Terronez passed away in 1997 at the age of 58.

The family photos date from the 1940s to 2004 and many of them are identified.

An embroidered, red LULAC Council #10 bowling shirt that belonged to Virginia Terronez completes the collection.

The final item in the collection is "Painting of a Chicana" by Irene Terronez, Mary Terronez's daughter. The painting depicts the struggle of a Chicana's identity between the old and the new. The painting was donated by Rusty Barceló in 2016.