These papers are divided into four series:

(1) Correspondence, 1955-2004 (2) Scholarship and Publication Records, 1954-2010 (3) Miscellaneous Materials, 1958-1999 (4) Travel Journals, 1966-2016

This is a collection of Mahlon Miller's life work as a pastor and Mennonite leader during the 1960s until the early 2000s. Mahlon and his wife Dorothy worked with numerous congregations during their careers, beginning with Pinto Mennonite in 1961. Mahlon was a longstanding pastor at Trinity Mennonite and Hopewell Mennonite Church during the 1970s and 1980s. This collection contains records and correspondence from his time as pastor and involvement in Mennonite Conference leadership. Notably, this collection also includes Mahlon and Dorothy's teaching materials on marriage, family, church structure, and evangelism.
Church Records Include: Pinto Mennonite Church, Yellow Creek Mennonite Church, First Mennonite Church, Trinity Mennonite Church, Trinity New Life Mennonite Church, Ashton Mennonite Church, Hopewell Mennonite Church, Hope Community Mennonite Church, North Main Mennonite Church, Marion Mennonite Church, Maranatha Mennonite Church, Forks Mennonite Church, and assorted guest engagements.