Collection contains watercolor renderings, sketches, technical drawings (ground plans, elevations and details), photographs, glass plate and acetate negatives, scrapbooks, set models and some related papers covering Urban's career in Vienna and New York as an architect, set designer, decorator and illustrator. There is a thorough representation of his New York career including his set designs for Florenz Ziegfeld (1915-1932) and the Metropolitan Opera (1917-1933). The collection also contains information on Urban's work for William Randolph Hearst as art director for Cosmopolitan Studios, his exhibitions including his 1921 Wiener Werkstätte store, and his many architectural projects. Biographical information and research gathered by Richard Cole and Randolph Carter including contributions from his daughter,Gretl Urban, and biographical notes and some letters from his widow, Mary Urban, are also present.

A collection of manuscripts and proofs of works published by Alexander, including Decorating Begins With You, 1958, Decorating Made Simple, 1964, and Designing Interior Environment, 1972.