Fonds is arranged in the following series:
1) Diaries - 1981 - (3 files) Box 182
2) Personal Writings - 1971-1981, 2012 - (4 files) Box 182
3) Correspondence - 1969 - (1 file) Box 182
4) Genealogy complied by Henry J Block in 1994 entitled "The Block Family Journal". - (4 files) Box 182
5) Family Records - (2 files) Box 182
6) Publications - 1945 - (31 file) Box 182
7) Obituaries - (2 files) Box 182
8) Miscellaneous documents & map - (1 file) Box 182
9) Photographs

Fonds consists of the following series:
1) Derksen and Martens Family Genealogy & Song book- (1 file) Box 368

Series consists of the following files:
1) Recollections of the Harders - Jacob A. Loewen, Frank Peters, Peter D. Loewen
2) Our Story - J A Harder
3) I Was Led Away to be Shot - J A Harder
4) Continuing My Husband's Journal with our story - Tina Harder
5) Postscript - J A Harder
6) Biography of Grandparents and Great Grandparents of A J Harder
7) The Johannes Harder Family - John Harder Jr.
8) Recollections - Children of John and Tina Harder
9) The Blumstein Legacy - Leland and Samuel Harder
10) Obituary of Reverend John Harder - Tina Harder
11) Obituary of Tina Harder
12) Poetry - J A Harder
13) Poems to Johannes Harder From His Parents (Waisenheim, Grossweide) - 1907-1938