Saul Kaplun

[3] Saul and his parents, who were refugees from Nazi persecution,[8] lived in Lwów until 1939, when they fled Poland;[4] they immigrated to New York shortly before World War II.

At the dedication ceremony of one of the institutions he funded, at Tel Aviv University,[9] Morris Kaplun himself "learned for the first time just how important a man [his son] was in his field.

The late Dr. Saul Kaplun… left behind 'a roomful of manuscripts' which Prof. Paco Lagerstrom, of the California Institute of Technology, who spoke at the dedication, said contained 'a wealth of scientific ideas far outweighing his published work'.

"[10] Saul Kaplun received his PhD in 1954 under the advisorship of Paco Lagerstrom at the California Institute of Technology[11] with his thesis dissertation The role of coordinate systems in boundary layer theory.

"[2] Caltech President Lee Alvin DuBridge eulogized at the same ceremony, "Saul Kaplun had a brilliant analytical and creative mind and made many profound and original contributions to the theory of fluid mechanics.

Robert Edmund O'Malley wrote, "The work of Kaplun and Lagerstrom at Caltech in the 1950s was especially important to the development of matched expansions and its applications to fluid mechanics.