No.	Title	Date
1	Photographs of people collected by Willson, 1911-1924.
2	Correspondence, 1916.
3	Correspondence	1916
4	Correspondence	1917
5	Correspondence	1918
6	Correspondence	1919
7	Correspondence	1919
8	Correspondence	1920
9	Correspondence	1921
10	Letter from J. E. Moseley	1921
11	Correspondence	1921
12	Correspondence	1922
13	Correspondence	1923
14	Correspondence	1924
15	Correspondence	1924
16	Correspondence	1924
17	Correspondence	1925
18	Letter to Willson from P. A. Vans Agnew	1925
19	Letter to Lucien A. Spencer	1925
20	Correspondence	1925