The papers document professional activities of Joaquín Meyer, a prominent figure in Cuban sugar industry, the Alternate Executive Director of International Bank for Reconstruction and Development for Mexico, Cuba, Peru, Uruguay, Ecuador, Dominican Republic, El Salvador, Honduras and Nicaragua; a Representative of the Cuban Sugar Stabilization Institute in Washington and Financial Councilor of the Cuban Embassy. Bulk of the materials consists of correspondence. The materials also include photographs, documents, reports, pamphlets, memorabilia, diplomas and albums with photographs and clippings. The materials consist of reports on sugar cane industry, reports on World's sugar production, documents from Cuban Embassy in Washington DC, documents on US-Cuba relations and economic trade, memoranda about amendments to sugar legislature in US, clippings from 1959 about Fidel Castro, transcripts, international sugar reports, typescript of the International Sugar agreement.

The records document business activities of the Guantánamo Sugar Company.  The materials consist of the official records of the Guantánamo Sugar Company offices located at 120 Wall Street, New York, from 1915 through 1959.  These records include correspondence, ledgers, financial records, and other documents of this company which was the owner of the Soledad Sugar Mill, Los Caños Sugar Mill, the Isabel B. Sugar Mill and the Guantánamo Railroad Co. all located around the Guantánamo Bay.