The collection contains two boxes of folders containing photocopies of Church’s diaries or notebooks. The folders are organized chronologically from 1898 to 1957, with small and large gaps in the holdings. See box list for specific holdings documentation. Church, evidently, was not always a consistent writer, but also some diaries may have been lost over time. The Church family’s inventions are of particular interest: Alabastine paint and plaster, truck trailers, toys, trucks with a separate motor for each wheel, wheelchairs and other vehicular inventions. The diary entries near the end deal more with Church’s personal life: family, health and activities. Church includes notes to the reader, explaining his methods and purposes for writing a diary.