No.	Title	Date
41	Letters from O. A. Hardin describing Southern Drainage District plans for levees, dikes and canals	1918
42	Letters to Bernard MacFadden	1933
43	Letters to Paul C. Taylor, regarding timber contracts	1934
44	Map showing results of examination of the Tamiami Trail lands in Dade County, Florida, to accompany report dated March 23, 1917.	1917
45	Map showing results of exploration and examinations in Lee, Monroe and Dade Counties, Florida.	1917
46	Pamphlet and photographs relating to sugar industry in Florida	1921
47	Papers and map relating to Tamiami Trail	1926
48	Papers, mainly relating to sugar cultivation in the Everglades	1932
49	Papers on the history of Tamiami Trail construction	1928
50	Papers relating to Deep Lake and Bonita Springs	1930
51	Papers relating to drainage and the proposed Tamiami Railway	1918
52	Papers relating to economic endeavors	1919
53	Papers relating to Seminole Indians	1932
54	Papers relating to Tamiami Trail construction	1926
55	Papers relating to Tamiami Trail construction	1926
56	Papers relating to the creation of Collier County (Fla.)	1923
57	Papers relating to the Everglades	1908
58	Papers relating to the Miami Mineral, Oil and Gas Company and Tamiami Trail	1917
59	Papers relating to the Tamiami Railway	1925
60	Photographs of Tamiami Trail, Everglades City, Chatham Bend, agriculture and Jaudon's businesses, 1903-1930.	1930