[1] Schultze had been an employee of the firm of Warren & Wetmore, and during his twenty years in that company's office he had worked on the designs for such projects as New York's Grand Central Terminal.
Schultze & Weaver architect Lloyd Morgan (1892–1970), in 1929, designed the Waldorf-Astoria Hotel which, upon its completion in 1931, was the world's largest, with 2,200 rooms.
Schultze & Weaver redesigned and renovated the Grand Ballroom in New York City's Plaza Hotel in the autumn of 1929.
Though best known for their work on luxury hotels, Schultze & Weaver also designed schools, hospitals, residential developments, and office buildings such as the 1925 New York headquarters of the J.C. Penney Company.
During this period the firm designed three large apartment complexes for the Metropolitan Life Insurance Company, and a fourth that served as housing for United Nations employees in New York.