This collection consists of material gathered by architectural historian Lars DeLagerberg for his book, "New Jersey Architecture: Colonial and Federal" (privately printed by Walter Whittum, Inc., 1956). The book consists mostly of drawings and photographs by DeLagerberg, with brief identifying captions.

The collection of consists of 15 scrapbooks of research notes, sketches, original photographs, postcards, and clippings. Most of the material relates to the history of buildings in Newark, but there is also material on other New Jersey cities, on New York architecture, and on historic preservation in other states.