Sketchbooks, 1895-1903; sketches, 1894-1896, made while Magonigle was travelling in Europe on Rotch Travelling Scholarship; graphic designs, 1902-1919; rendered competition drawings for government buildings, circa 1907-1920, and memorial structures, circa 1910-1930; photographs of Magonigle's architectural drawings, memorial structures, monuments, and other architectural work, much of it located in New York City, circa 1900s-1930s. Among projects represented in the collection are the Gates Avenue Courthouse, Brooklyn, N.Y.; the Firemen's Memorial, the Robert Fulller Memorial, and the National Watergate Memorial in New York City's Riverside Park; the Liberty Memorial in Kansas City, Mo.; the Isaac Guggenheim house in Port Washington, N.Y.; numerous additions and alterations for the Franklin Murphy mansion in Mendham, N.J.; and the United States Embassy compound in Tokyo, Japan. Also, drawings by other architects including Hugh Ferriss, Thomas Rogers Kimball, Hubert George Ripley, and I.W. Taber, that were presented to Magonigle. Also included are drawings, circa 1910s-1940s, by Magonigle's wife, painter and designer Edith Marion Day; photographs of Day and Magonigle; manuscripts of lectures, literary works, and other writings by Magonigle; and ephemera.

Harold Van Buren Magonigle was a New York-based architect, graphic designer, painter and sculptor. Magonigle married artist Edith Marion Day in 1900. Edith Magonigle was a painter and muralist who served as President of the Society of Women Painters and Sculptors. Edith was a primary collaborator of Harold Van Buren Magonigle in both the decoration and creation of buildings designed by his practice. He was widely known as an architect of memorial structures including the Firemen's Memorial on Riverside Drive and the Liberty Memorial in Kansas City. Other prominent commissions include the Isaac Guggenheim house in Port Washington, New York and the United States Embassy in Tokyo, Japan.

Harvey Wiley Corbett (1873-1954) was an American architect primarily active in New York City but also completed projects across the United States and in London. While known for his work on early skyscraper architecture, his work also includes banks, churches, educational campuses, government buildings, housing projects, and large memorial projects like the George Washington Masonic National Memorial (Alexandria, VA). His most well-known projects include Rockefeller Center (Corbett served as a senior architect on the project), the Criminal Courts Building (Centre Street, NY), and Bush Tower (East 42nd Street, NY). Alongside his prolific career, Corbett was also engaged in the theoretical elements of the evolving American city. This can been seen through his commissioning of Hugh Ferriss for the creation of the set of drawings now known as the "Metropolis of Tomorrow," which questioned the results of the contemporary zoning laws of New York City. This collection reflects the breadth of Corbett's work and interests and while it primarily consists of photographs of his many projects, the collection also encompasses a small portion of professional papers and reference material. Beyond the bulk of photographs, there are drawings, correspondence, notes, clippings, postcards, daily calendar entries, a portfolio, photo albums, publications, and financial and legal records.

Hugh Ferriss (1889-1962) was an architectural renderer known for his vision of the modern city and his ability to translate vast projects into dramatic but clear-cut images. Ferriss published two books: The Metropolis of Tomorrow (1929) and Power of Buildings (1953). The collection was donated to Avery Library by Ferriss' family after his death, and has been supplemented by several later additions from other sources. 363 original drawings in the collection have been photographed and digitized and can be viewed via links in the finding aid's container listing.