Fonds is arranged in the following series:
1) Diaries- 1927-1929, 1932-1940, 1943-1969 - (6 files) - Box 192
2) Correspondence 1926-1938, 1943-1945, 1947-1958, 1960-1961, 1963 - (7 files) - Box 192
3) Financial Records 1915-1931, 1933-1939, 1941-1965 - (2 files) - Box 192
4) Legal Documents (legal documents consists of immigration identification cards and Canadian Mennonite Board of Colonization records) 1926, 1932, 1934-1937, 1943, 1946, 1948-1949, 1951 - (1 file) - Box 192
5) Scrapbooks -consists of poetry, music and songs, clippings, family history - (1 file) - Box 192

Series consists of the following files:
1) Legal Documents - 1936, 1943-1947, 1958 1964-1984, 1993-1994, 2005 (6 files)

MCC Latin America Memos of Understanding, reports, minutes. 1944 - 53 (O.O. Miller), MCC Latin America Orie O. Miller Trip