The collection provides extensive documentation of the personal lives and careers of the Rein and Hilda through a broad range of documents. This includes official documents such as birth certificates, baptismal certificates, diplomas, teaching certificates, a draft card, and so forth. Limited correspondence provides some insights into their lives, but more detail is found in extensive clippings, and in Hilda’s case reminiscences and presentations, especially related to growing up on the mission field in Oklahoma. Rein collected historical advertisements and pamphlets related to his interest and work with road maintenance.