No.	Title	Date
441	Lake Okeechobee and environs, 1912-1916	1916
442	Landscape Pattern – Marl Prairie/Slough Gradient: Vegetation Composition along the Gradient and Decadal Vegetation Change Pattern in Shark Slough: Annual Report 2012	2013-04-30
443	Landscape patterns of periphyton in the Florida Everglades	2011
444	Landscapes, circa 1890-1910	1910
445	Landscapes in the Miami region, approximately 1897-1899	1899
446	The least known wilderness of America
447	The least known wilderness of America	1917
448	The least known wilderness of America	1917
449	Letter and clipping pertaining to 1922 trip across the Everglades.
450	Letter from Duncan U. Fletcher	1913
451	Letter from Ernest Coe, Tropic Everglades National Park Association, informing her of the current status of Everglades National Park creation	1932
452	Letter from J. E. Moseley	1921
453	Letter from Joseph K. (Tahan) Griffis	1912
454	Letter from Nathaniel S. Thomas	1931
455	Letter relating to lands at Flamingo (Cape Sable)	1913
456	Letter to Charles S. Walker regarding land sales, October 19, 1925
457	Letter to Ernest Coe, December 8, 1932	1932
458	Letter to Lucien A. Spencer	1925
459	Letter to Marjory Stoneman Douglas, September 28, 1920.
460	Letter to Willson from P. A. Vans Agnew	1925