[1][2] Weiler was born to a poor Jewish family in Svyatsk, Russian Empire, the seventh of ten children.
[2] Weiler managed the firm's New York office while Swig ran the West Coast business out of San Francisco.
[3] They grew the business nationally including over 5 million square feet in New York City and 1.5 million square feet in California; properties owned included the Metropolitan Opera House (which they demolished to build 1411 Broadway at 39th Street);[3] the W. R. Grace Building; 1065 Avenue of the Americas; and 711 Third Avenue at 44th Street.
[2] The architecture school of the Bezalel Academy of Arts and Design in Jerusalem was renamed the Jack D. Weiler College of Architecture; he funded the Weiler-Arnow Medical Education Building at Ben Gurion University of the Negev; and the Jerusalem College of Technology named its yeshiva in honor of his father.
"[2] In 1947, he was named an honorary alumnus of Brandeis University, he was the first New Yorker and the third individual in the United States to receive this honor.