The diaries of Rev. Frederick Krecker cover a span of almost fifty years (1838-1888). There are twenty-five (25) individual volumes. The reveal in a very personal manner the lifetime experiences of an itinerant evangelical preacher in Pennsylvania's Lehigh Valley. Among the topics discussed are the conversion numbers of prospective new members to his congregations; a highly detailed record of the seasonal weather paterns; a recounting of the challenges in traveling from one samll town to another on very basic roads in the worst of weather conditions, as well as a heartfelt description of the uttler loneliness he must cope with in his service to God.

The earliest volumes in these journals were written in German, but Krecker switched to English when his wife, Isabella, complained to him that she could not read German, their native language, well enough to comprehend his writings. The English use started in the sixth volume in 1848.

The diaries of Krecker record the ordinary work of an itinerant preacher who pastors to his congregations and the experiences of life in mid 19th century Pennsylvania in a way not too dissimilar to many of his contemporaries.

This collection primarily documents the work and ministry of the Evangelical Church's annual conferences and local churches from the middle nineteenth century to the middle twentieth century. To a lesser degree there are records that reflect the ministry of the general church as well. There are other records that pertain to filial denominations such as the Evangelical Association, United Evangelical Church, Church of the United Brethren in Christ (United Brethren Church), and the Evangelical United Brethren Churches are also found in this collection. Leedy was an avid collector of church related information so that the topical landscape of this collection is broad enough to cover information ranging from local church ministries and histories to denominational theological beliefs and social concerns. Most of the paper records center on church work in the Ohio region though not to the exclusion of other geographic areas within the continental United States and Germany. All in all this collection provides a nice overview of the diversified life within the Evangelical tradition and is an excellent resource for those who wish to understand more fully the Evangelical Church's historical influence within the ongoing traditions of United Methodism.