The story
The company was founded in 1922 by Robert C. Knapp and W. Seward Webb.
William Zeckendorf joined the firm in 1938 and acquired it in 1949.
In 1965, the company filed for bankruptcy protection and Roosevelt Airfield was sold to Corporate Property Investors. The company's total assets of about US$21.5 million (equivalent to $159 million in 2025) were dwarfed by its total liabilities of about $60 million (equivalent to $454 million in 2025) and contingent tax liabilities of $29.4 million (equivalent to $223 million in 2025).
From Wikipedia’s article on Webb and Knapp, shared under CC BY-SA 4.0.3