Postcards are mainly of Key West and the Florida Keys. Photographs are of the Sawyer family and the Keys.

Record books are missing many pages; remaining information pertains to Miami Beach sales figures, use of electricity, water and so on for varying years. Papers include a proposal addressed to the Miami Beach City Commission, for improvements to be made in 1926, two maps showing these proposed sewers, paving and water mains; and a report from the Miami Beach City Auditor for August 1931

Correspondence, clippings, and typescripts of articles and books by Griswold. Much of the material pertains to his unpublished work on Dr. Henry Perrine. Articles date primarily from the 1940s, when Griswold was freelancing in Key West.

Correspondence, newspaper clippings, genealogical material, and photocopies of 19th century letters pertain to Indian Key history, especially the estate of Jacob Housman, who owned much of the island until Indians destroyed the settlement in 1840.

A diary of a 1960 visit to Jamaica (probably by Mrs. Griswold) and typescripts on Islandia (by C.P. Idyll) and the Museum of Science.

Source material, correspondence, typescripts, and photographic prints pertain to Griswold as a writer and conservationist. Includes a letter from William C. Sturtevant about the political action leading to the establishment of Everglades National Park; correspondence relating to the Historical Association's preservation of the Housman grave marker from Indian Key; material about the 1905 murder of game warden Guy Bradley, a victim of the egret plume trade; a radio script: Going places with Griswold; and detailed outlines for a proposed South Florida handbook, to be written by Griswold and Charles Brookfield.

35mm mounted slides (primarily Ektachrome) of Caribbean, Central and South American sites. Dates, when given, are for 1958-1961.

Newspaper clippings, photographic prints, correspondence, postcards, greeting cards, legal documents and personal memorabilia pertain to Miami Area history and the history of the Huddleston family. The collection is particularly rich in vivid handwritten descriptions and newspaper obituaries of Miami pioneers who died in the 1950s. Also included are newspaper accounts of historic buildings and personalities, as well as the social activities of members of pioneer families, and of the meetings of the Miami Pioneers group.

Scrapbook marked "Finished 1955" in Box 6 has much of the Huddleston family material, including Farmer City, Illinois, newspaper clippings.

One photo with cousin Sebourne Tynn and one with brother Benjamin W. Carter.