Established in 1951, the Coconut Grove Garden Club is a nonprofit organization dedicated to the study, practice, and appreciation of horticulture. This collection contains photograph albums, Plymouth Congregational Church registers, and other records held by the Coconut Grove Garden Club.

The Finlay B. Matheson collection includes more than 2,411 photographs; 112 maps, surveys, and architectural plans; and 13 books related to William John Matheson and his immediate family. Estate documents and other documents containing historical and biographical information pertaining to the Matheson family and their various business ventures can also be found within this collection, as well as drawings, postcards, and some of the first aerial view photographs of Key Biscayne, Coconut Grove, the Miami River, and the Florida Keys. Florida's landscape during the early 20th century is captured throughout the various albums and scrapbooks and attests to a more leisurely lifestyle before the advent of skyscrapers and multi-lane highways. Furthermore, the collection provides an in-depth glimpse into the burgeoning social life of early inhabitants who gathered at the Biscayne Bay Yacht Club.

The collection includes correspondence, logbooks, photographs albums, slides,  and diaries pertaining to various members of the Munroe Family who settled in Coconut Grove, Florida.