Skip to main content

Efraín Díaz Santiago Iglesias Educational Society Records

Identifier: MSS 78

Scope and Contents

The collection ranges is from 1958-1996. In the collection, Díaz includes internal information such as S.I.E.S constitution and by-laws, as well as meeting agendas and minutes. The collection has a folder for S.I.E.S's credit union, which made loans to Hispanic members at reasonable rates. There are also flyers for the different events and programs S.I.E.S put together. Also included in the collection are examples of labor courses S.I.E.S offered to it's members, courses like "History of Industrial and Labor Relations" and "Collective Bargaining in the Public Sector".


  • Creation: 1958-1996

Conditions Governing Access

Open to researchers without restrictions.

Conditions Governing Use

Copyright held by Centro.

Biographical / Historical

Efraín Díaz was a member of the Board of Directors of the Santiago Iglesias Educational Society (S.I.E.S.), he also sat on different committees within the organization.

S.I.E.S was made up of members of labor unions from various industries, among them New York City Central Labor Council, the AFL-CIO, and the International Brotherhood of Electrical Workers Local Union #3. It was created to address the needs and concerns of Puerto Rican and other Hispanic workers and communities in the United States. The organization worked towards justice and employment equality to the Puerto Rican and the Spanish speaking community in New York City.


0.25 Cubic Feet

Language of Materials


Spanish; Castilian

Metadata Rights Declarations


Established in 1958, the Santiago Iglesias Educational Society (S.I.E.S) served as a resource to Puerto Rican and other Spanish speaking communities in New York City. Efraín Díaz was a board member of the Santiago Iglesias Educational Society and the collection he donated contains mostly photocopies of newspaper clippings, photographs, flyers, correspondences, certificates, meeting agendas and minutes.

Other Finding Aids

English / Spanish bilingual finding aid available upon request.

Immediate Source of Acquisition

Gift of Efraín Díaz.

Related Materials

Santiago Iglesias Educational Society Records, Jose Lopez Papers, Edwin Lopez Papers and Hispanic Labor Collection at Centro.


Efraín Díaz Santiago Iglesias Educational Society Records
Cynthia Sanchez and Ana Rosa Perez, Archive staff members under the supervision from Pedro Juan Hernandez.
August 2020
Description rules
Describing Archives: A Content Standard
Language of description
Script of description

Revision Statements

  • June 2022: Descriptive notes for the collection were revised by Herbert Duran.

Repository Details

Part of the Archives of the Puerto Rican Diaspora Repository

Silberman Building, Hunter College
2180 Third Ave. Rm. 122
New York New York 10065

About the Collections

Our collections consist of personal papers from prominent Puerto Rican artists, elected officials, social activists, writers, as well as the records of community-based organizations. Our largest collection, the Offices of the Government of Puerto Rico in the United States (OGPRUS) Records, measures approximately 2,900 cubic feet and contains an extraordinary amount of information regarding Puerto Rican migrants and the government institutions established to assist them. The collections date from the 1890s to the present, and document Puerto Rican communities in the Northeast, Midwest, Florida, California and Hawaii.