See also THIS.
From the Preface:
Pursuant to directives of Dr. Luis F. Silva Recio, Director of the School of Public Administration of the university of Puerto Rico, we take pleasure in submitting the following report to the United States-Puerto Rico Status Commission created under the provisions of Public Laws number 88-271, 88th Congress of the United States (February 20, 1964) and number 9, Legislature of the Commonwealth of Puerto Rico (April 13, 1964). The report consists of an inventory of the executive departments, agencies and public corporations of the Commonwealth of Puerto Rico, and all of the federal agencies with offices in Puerto Rico. It is divided in two parts. Part I covers the Commonwealth agencies; Part II covers the federal agencies.