Alven R. Feinstein, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Felipe A. De La Balze, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Freinkel, Norbert - C.R.U., undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Furth, Jacob, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Dr. Angel Garma, Buenos Aires, Argentina, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Guillemin, Roger, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Halberg, Franz, undated Box 1 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Hirsch, Jules, undated Box 2 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Hofmann, Klaus, undated Box 2 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966
Holman, Dr. Ralph T., undated Box 2 Bookmark Collection Context Frank Libman Engel Papers, 1934-1990Correspondence, 1945-1966