The American Jewish Joint Distribution Committee (JDC) Archives has is an excellent repository of information on Jewish refugees who fled to different parts of Latin America: Dominican Republic, Cuba, Bolivia, Perun Ecuador and Uruguay, and more in more recent times. To access their photo gallery on Latin America go to: http://archives.jdc.org/our-stories/latin-america/ Scroll down to the gallery for reach country’s photos and more. If you click on the right side of the gallery before you click on a particular country there is a link to all their photo galleries form the World War ll era.
If you click on http://archives.jdc.org/ you can access their Names Index (scroll down) where their database has 500,000 names found in their historic documents and client lists.
They also have a genealogy story, “It Only Takes One Document” which you may find of interest: