Archival materials of the society are not yet fully processed. However, staff members could assist researchers in locating pertinent items among the collections from various congregations in the Lancaster Mennonite Conference. There are scattered records within ca. 10 collections of, primarily, material and financial aid given to immigrant Russian Mennonites as they passed through southeastern Pennsylvania on the way to the American Midwest and Canada, 1874–1930. These include letters, diaries, account books, certificates, and other documents.