Document with information about a film related to Antoñica Izquierdo titled "Los días del agua" directed by Manuel Octavio Gómez , 1981 October 21

As a young revolutionary, Chávez amassed an important collection of underground publications, propaganda materials, manifestoes, and documents relating to insurgent organizations such as Movimiento 26 de julio (26th of July Movement), Acción Cívica Cubana, and Movimiento de Resistencia Cívica. Following the promising ideas of Fidel Castro, these groups were organized to plot a coup d'état against President Fulgencio Batista's government and, as a result, launch the Cuban Revolution. The collection is organized in fifteen series. Materials within Series 1 through 6 are about events, people, and the insurgent organizations plotting the Cuban Revolution that culminated on January 1st, 1959. Documents and materials from these series are dated from 1951 to 1959. Havana, Cuba, New York City, NY, Miami, FL, and Caracas, Venezuela are the cities documented in these series.

Underground publications within Series 1 form a rare collection of zines and periodicals pre-dating the Cuban Revolution. The zines titled Revolución and Aldabonazo were published by Vicente Baez and Carlos Franqui. Dr. Lillian Guerra received this confirmation from Baez. The series also contain 28 issues of Carta Semanal, the semi-clandestine publication of the Cuban Communist Party or PSP, dating from 1951 to 1958. It was semi-clandestine because Batista tolerated it and allowed it to circulate even though the party was technically criminalized after 1953. The reason for Batista's tolerance is apparent in the publication's message: while it says much about Batista being a tyrant, it actually condemns the strategies of the Movimiento 26 de julio, its counterparts, and the Directorio Revolucionario in toppling the Batista regime.Series 2 to 6 include material related to Fidel Castro's revolutionary Movimiento 26 de julio.

Ernesto Chávez's own experience as a maestro rural and the city of Matanzas's political and social life are documented in Series 7 through 11, which contain personal items, ephemera, official documents, ID cards, ration cards, correspondence, and photographs. Letters sent and received by Chávez dating from 1960 reflect his relationship with family members and friends. The correspondence also sheds light on the harsh living conditions endured by Chávez during his months of training as a maestro voluntario. Photographic material taken by Chávez with a Kodak Baby Brownie 127 camera document his experience as a rural teacher in the Cuban countryside. Some of these images are included in two of Chávez recent publications: Maestro rural and Maestro voluntario. The photographs series also includes a substantial amount of images depicting social and political scenes in Matanzas and military relations between Cuba and the US, all prior to the Cuban Revolution.

Series 12 includes Ernesto Chávez' own research on the Cuban War of Independence. He documented information about the Spanish citizens and military personal who migrated from Spain to Cuba, such as their names, residence in Spain and in Cuba, dates of birth and death. He also collected the names of citizens who had been executed by the Spanish Army. Series 13 includes the books that Ernesto Chávez used as a maestro voluntario and also as a civilian military instruction. Series 14 and 15 include collections created by Chávez's friends, such as the personal correspondence of Sahara Geraldo Paz, another Cuban voluntary teacher, and researcher Aída García Alonso's notecards and photographs regarding life in the Cuban slums or yaguas.