Included are drawings made by Avery while studying under Jules Andre at the Ecole des Beaux-Arts, Paris, and sketchbooks containing sketches made in Paris and on excursions, 1872-1879. Architectural drawings and photographs of architectural drawings for proposed or executed residential and commercial buildings, churches, art galleries, monuments, and other structures, 1880s; competition drawings for public monuments, 1883-1887; experimental studies, 1885, for the pedestal of Frederic-Auguste Bartholdi's Statue of Liberty; and 39 studies and finished drawings, 1888-1890, made for a competition for a memorial for Ulysses S. Grant which he did not win. Also, magazine articles by or about Avery and his work, 1883-1890; obituaries and death announcements, 1890; miscellaneous photographs, certificates, and papers; and invitations, clippings, illustrations, and photographs, circa 1892-1894, relating to the founding of the Avery Architectural Library at Columbia University.

Architectural drawings and photographs of Hoppin and Koen designs including alterations to the residence of R.T. Wilson, Jr., 15 East 57th Street, New York, 1905; Albany County Courthouse, Albany, New York, 1913-1915; Mount Morris Theater at Fifth Avenue and 116th Street, New York, 1911-1912; New York City Fire Department building, East 111th Street and Second Avenue, 1911; Manhattan terminal of the Brooklyn Bridge, undated, not constructed; residences of George B. McClellan at Princeton, New Jersey, and Washington, D.C., 1922; Edith Wharton and Edward Wharton's Lenox, Massachusetts, home, the Mount; New York City Police Headquarters, 240 Centre St., New York; and others.

Architectural drawings for residence, public and commercial buildings, churches, university buildings, and other structures, ca. 1880s-1925, many of which are located in Maine. These were done by Stevens while working independently, in partnership with his son John Howard Stevens, and while a member of architectural firms Fassett and Stevens (with offices in Portland, Maine and Boston, Mass.) and Stevens and Cobb. One unidentified photograph of a house is included. Also included are drawings Stevens did for the book EXAMPLES OF AMERICAN DOMESTIC ARCHITECTURE.

Books, correspondence, manuscripts, scrapbooks, and photographs of Thomas S. Jones. Correspondents include literary figures. Manuscripts of automatic writing are included. Photographs, 1894-1931, include portraits of Jones and others, views of his various homes, and of European travels, particularly his visit to Glastonbury Abbey in England, 1922.