This has apparently been publicly available since at least 2010, because I found it in that year’s edition of A. J. Weberman’s Coup d'etat In America: The CIA and the Assassination of JFK

https://archive.org/stream/CoupDetatInAmerica/NODULE%2018%20OSWALD%20IN%20NEW%20ORLEANS_djvu.txt

OS INDICES RESULTS:

Laureano Batista, a 32 year old Cuban exile, was from a wealthy Cuban family and in Cuba he was a banker. He was granted a POA in December 1959 and an OA in February 1960 for use as a PP agent in Havana, Cuba.

A copy of a letter in Subject's file dated November 22, 1963 signed by Subject as Secretary for Military Affairs, Executive Committee, Movimiento Democrata Cristiana (Christian Democratic Movement) is addressed to Major General Bela K. Kiraly, President, Hungarian Freedom Fighters Federation, Inc., and offered the services of the MDC in arranging meetings and discussions with other anti-CASTRO organizations and the Hungarian Freedom Fighters. The Hungarian Freedom Fighters were (deleted) was interested in information on the MDC before granting approval for contact between the two organizations.