The Alan Crockwell Collection contains a variety of materials from different sources that document the history of Miami, Coconut Grove, Coral Gables, and greater Miami-Dade County. Much of the content is related to Ralph Middleton Munroe and his family. Topically, the papers also address criminal history in Miami-Dade County, historic buildings in Coconut Grove including the Barnacle and the Coconut Grove Library, the history of the University of Miami, and the early settling of Miami-Dade County. The dates of items range from 1873 into the 1970s.

This collection contains the original 1924-1925 blueprints used by Schultze & Weaver to design the Coral Gables Biltmore Hotel, as well as a 1981 reconstruction blueprint. Also included is an essay by Andrew E. Colsky titled "The History of the Miami Biltmore Hotel and Country Club," a 1989 report titled "The Biltmore Hotel, Coral Gables, Florida, Operating Results 1989 January Through September & Full Year Outlook, 1990 - 1993 Projection," and a 2002 Biltmore News bulletin.

The Lillian Frow Peacock & Eunice Peacock Photograph Collection primarily depicts the earliest settlers of Coconut Grove and Miami. The collection includes portraits of the Peacocks, the Frows, and other families, as well as historically notable places such as the Peacock Inn and the Coconut Grove School. Box 2 includes a handcrafted menu from the first Biscayne Bay Yacht Club dinner at the Peacock Inn in 1891. The photograph album in box 4 includes portraits of the Peacock's English relations as well as a few of their Coconut Grove and Miami neighbors.

Michael J. Maxwell was an architectural consultant whose firm, Michael Maxwell Associates, Inc., consulted the city of Opa-locka in the mid-80s on appraisal and restoration matters. This culminated in a Master Plan for the Restoration of Historic Opa-Locka City Hall, and a Nomination Proposal of several historical sites in Opa-Locka to the National Register of Historic Places. These two documents, as well as the planning materials, are held in the Michael J. Maxwell collection.

The collection also contains other Opa-locka related materials. Included are 1926-1927 Opa-locka price lists, a 1953 charter, copies of the Opa-locka Times from 1926 and 1927, letters including a 1926 letter petitioning for the establishment of a Post Office at Opa-locka, a history of Opa-locka brochure and preparation materials for the brochure, and other items.

Willard Hubbell was a South Florida architect and playwright. His collection contains several plays, clippings regarding and programs of the plays, architectural documents and correspondence, a blueprint titled "Cloth House No. 1," four issues of The American Eagle newspaper, a typescript titled "F. W. Munson - (Questionaire about Merritt Island)," a document titled "History of the Koreshan Unity" by A. H. Andrews, and other items.